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GIT-PUSH(1)			  Git Manual			   GIT-PUSH(1)

NAME
       git-push	- Update remote	refs along with	associated objects

SYNOPSIS
       git push	[--all | --branches | --mirror | --tags] [--follow-tags] [--atomic] [-n	| --dry-run] [--receive-pack=<git-receive-pack>]
	     [--repo=<repository>] [-f | --force] [-d |	--delete] [--prune] [-q	| --quiet] [-v | --verbose]
	     [-u | --set-upstream] [-o <string>	| --push-option=<string>]
	     [--[no-]signed | --signed=(true|false|if-asked)]
	     [--force-with-lease[=<refname>[:<expect>]]	[--force-if-includes]]
	     [--no-verify] [<repository> [<refspec>...]]

DESCRIPTION
       Updates one or more branches, tags, or other references in a remote
       repository from your local repository, and sends	all necessary data
       that isn't already on the remote.

       The simplest way	to push	is git push <remote> <branch>. git push	origin
       main will push the local	main branch to the main	branch on the remote
       named origin.

       The <repository>	argument defaults to the upstream for the current
       branch, or origin if there's no configured upstream.

       To decide which branches, tags, or other	refs to	push, Git uses (in
       order of	precedence):

	1. The <refspec> argument(s) (for example main in git push origin
	   main) or the	--all, --mirror, or --tags options

	2. The remote.<name>.push configuration	for the	repository being
	   pushed to

	3. The push.default configuration. The default is push.default=simple,
	   which will push to a	branch with the	same name as the current
	   branch. See the CONFIGURATION section below for more	on
	   push.default.

       git push	may fail if you	haven't	set an upstream	for the	current
       branch, depending on what push.default is set to. See the UPSTREAM
       BRANCHES	section	below for more on how to set and use upstreams.

       You can make interesting	things happen to a repository every time you
       push into it, by	setting	up hooks there.	See documentation for git-
       receive-pack(1).

OPTIONS
       <repository>
	   The "remote"	repository that	is the destination of a	push
	   operation. This parameter can be either a URL (see the section GIT
	   URLS	below) or the name of a	remote (see the	section	REMOTES
	   below).

       <refspec>...
	   Specify what	destination ref	to update with what source object.

	   The format for a refspec is [+]<src>[:<dst>], for example main,
	   main:other, or HEAD^:refs/heads/main.

	   The <src> is	often the name of the local branch to push, but	it can
	   be any arbitrary "SHA-1 expression" (see gitrevisions(7)).

	   The <dst> determines	what ref to update on the remote side. It must
	   be the name of a branch, tag, or other ref, not an arbitrary
	   expression.

	   The + is optional and does the same thing as	--force.

	   You can write a refspec using the fully expanded form (for example
	   refs/heads/main:refs/heads/main) which specifies the	exact source
	   and destination, or with a shorter form (for	example	main or
	   main:other).	Here are the rules for how refspecs are	expanded, as
	   well	as various other special refspec forms:

	      <src> without a :<dst> means to update the same ref as the
	       <src>, unless the remote.<repository>.push configuration
	       specifies a different <dst>. For	example, if main is a branch,
	       then the	refspec	main expands to	main:refs/heads/main.

	      If <dst>	unambiguously refers to	a ref on the <repository>
	       remote, then expand it to that ref. For example,	if v1.0	is a
	       tag on the remote, then HEAD:v1.0 expands to
	       HEAD:refs/tags/v1.0.

	      If <src>	resolves to a ref starting with	refs/heads/ or
	       refs/tags/, then	prepend	that to	<dst>. For example, if main is
	       a branch, then main:other expands to main:refs/heads/other

	      The special refspec : (or +: to allow non-fast-forward updates)
	       directs Git to push "matching" branches:	for every branch that
	       exists on the local side, the remote side is updated if a
	       branch of the same name already exists on the remote side.

	      <src> may contain a * to	indicate a simple pattern match. This
	       works like a glob that matches any ref matching the pattern.
	       There must be only one *	in both	the <src> and <dst>. It	will
	       map refs	to the destination by replacing	the * with the
	       contents	matched	from the source. For example,
	       refs/heads/*:refs/heads/* will push all branches.

	      A refspec starting with ^ is a negative refspec.	This specifies
	       refs to exclude.	A ref will be considered to match if it
	       matches at least	one positive refspec, and does not match any
	       negative	refspec. Negative refspecs can be pattern refspecs.
	       They must only contain a	<src>. Fully spelled out hex object
	       names are also not supported. For example, git push origin
	       'refs/heads/*' '^refs/heads/dev-*' will push all	branches
	       except for those	starting with dev-

	      If <src>	is empty, it deletes the <dst> ref from	the remote
	       repository. For example,	git push origin	:dev will delete the
	       dev branch.

	      tag <tag> expands to refs/tags/<tag>:refs/tags/<tag>. This is
	       technically a special syntax for	git push and not a refspec,
	       since in	git push origin	tag v1.0 the arguments tag and v1.0
	       are separate.

	      If the refspec can't be expanded	unambiguously, error out with
	       an error	indicating what	was tried, and depending on the
	       advice.pushUnqualifiedRefname configuration (see	git-config(1))
	       suggest what refs/ namespace you	may have wanted	to push	to.

       Not all updates are allowed: see	PUSH RULES below for the details.

       --all, --branches
	   Push	all branches (i.e. refs	under refs/heads/); cannot be used
	   with	other <refspec>.

       --prune
	   Remove remote branches that don't have a local counterpart. For
	   example a remote branch tmp will be removed if a local branch with
	   the same name doesn't exist any more. This also respects refspecs,
	   e.g.	 git push --prune remote refs/heads/*:refs/tmp/* would make
	   sure	that remote refs/tmp/foo will be removed if refs/heads/foo
	   doesn't exist.

       --mirror
	   Instead of naming each ref to push, specifies that all refs under
	   refs/ (which	includes but is	not limited to refs/heads/,
	   refs/remotes/, and refs/tags/) be mirrored to the remote
	   repository. Newly created local refs	will be	pushed to the remote
	   end,	locally	updated	refs will be force updated on the remote end,
	   and deleted refs will be removed from the remote end. This is the
	   default if the configuration	option remote.<remote>.mirror is set.

       -n, --dry-run
	   Do everything except	actually send the updates.

       --porcelain
	   Produce machine-readable output. The	output status line for each
	   ref will be tab-separated and sent to stdout	instead	of stderr. The
	   full	symbolic names of the refs will	be given.

       -d, --delete
	   All listed refs are deleted from the	remote repository. This	is the
	   same	as prefixing all refs with a colon.

       --tags
	   All refs under refs/tags are	pushed,	in addition to refspecs
	   explicitly listed on	the command line.

       --follow-tags
	   Push	all the	refs that would	be pushed without this option, and
	   also	push annotated tags in refs/tags that are missing from the
	   remote but are pointing at commit-ish that are reachable from the
	   refs	being pushed. This can also be specified with configuration
	   variable push.followTags. For more information, see push.followTags
	   in git-config(1).

       --signed, --no-signed, --signed=(true|false|if-asked)
	   GPG-sign the	push request to	update refs on the receiving side, to
	   allow it to be checked by the hooks and/or be logged. Possible
	   values are:

	   false, --no-signed
	       no signing will be attempted.

	   true, --signed
	       the push	will fail if the server	does not support signed
	       pushes.

	   if-asked
	       sign if and only	if the server supports signed pushes. The push
	       will also fail if the actual call to gpg	--sign fails. See git-
	       receive-pack(1) for the details on the receiving	end.

       --atomic, --no-atomic
	   Use an atomic transaction on	the remote side	if available. Either
	   all refs are	updated, or on error, no refs are updated. If the
	   server does not support atomic pushes the push will fail.

       -o <option>, --push-option=<option>
	   Transmit the	given string to	the server, which passes them to the
	   pre-receive as well as the post-receive hook. The given string must
	   not contain a NUL or	LF character. When multiple
	   --push-option=<option> are given, they are all sent to the other
	   side	in the order listed on the command line. When no
	   --push-option=<option> is given from	the command line, the values
	   of configuration variable push.pushOption are used instead.

       --receive-pack=<git-receive-pack>, --exec=<git-receive-pack>
	   Path	to the git-receive-pack	program	on the remote end. Sometimes
	   useful when pushing to a remote repository over ssh,	and you	do not
	   have	the program in a directory on the default $PATH.

       --force-with-lease, --no-force-with-lease,
       --force-with-lease=<refname>, --force-with-lease=<refname>:<expect>
	   Usually, git	push refuses to	update a remote	ref that is not	an
	   ancestor of the local ref used to overwrite it.

	   This	option overrides this restriction if the current value of the
	   remote ref is the expected value.  git push fails otherwise.

	   Imagine that	you have to rebase what	you have already published.
	   You will have to bypass the "must fast-forward" rule	in order to
	   replace the history you originally published	with the rebased
	   history. If somebody	else built on top of your original history
	   while you are rebasing, the tip of the branch at the	remote may
	   advance with	their commit, and blindly pushing with --force will
	   lose	their work.

	   This	option allows you to say that you expect the history you are
	   updating is what you	rebased	and want to replace. If	the remote ref
	   still points	at the commit you specified, you can be	sure that no
	   other people	did anything to	the ref. It is like taking a "lease"
	   on the ref without explicitly locking it, and the remote ref	is
	   updated only	if the "lease" is still	valid.

	   --force-with-lease alone, without specifying	the details, will
	   protect all remote refs that	are going to be	updated	by requiring
	   their current value to be the same as the remote-tracking branch we
	   have	for them.

	   --force-with-lease=<refname>, without specifying the	expected
	   value, will protect <refname> (alone), if it	is going to be
	   updated, by requiring its current value to be the same as the
	   remote-tracking branch we have for it.

	   --force-with-lease=<refname>:<expect> will protect <refname>
	   (alone), if it is going to be updated, by requiring its current
	   value to be the same	as the specified value <expect>	(which is
	   allowed to be different from	the remote-tracking branch we have for
	   the refname,	or we do not even have to have such a remote-tracking
	   branch when this form is used). If <expect> is the empty string,
	   then	the named ref must not already exist.

	   Note	that all forms other than
	   --force-with-lease=<refname>:<expect> that specifies	the expected
	   current value of the	ref explicitly are still experimental and
	   their semantics may change as we gain experience with this feature.

	   --no-force-with-lease will cancel all the previous
	   --force-with-lease on the command line.

	   A general note on safety: supplying this option without an expected
	   value, i.e. as --force-with-lease or	--force-with-lease=<refname>
	   interacts very badly	with anything that implicitly runs git fetch
	   on the remote to be pushed to in the	background, e.g.  git fetch
	   origin on your repository in	a cronjob.

	   The protection it offers over --force is ensuring that subsequent
	   changes your	work wasn't based on aren't clobbered, but this	is
	   trivially defeated if some background process is updating refs in
	   the background. We don't have anything except the remote tracking
	   info	to go by as a heuristic	for refs you're	expected to have seen
	   & are willing to clobber.

	   If your editor or some other	system is running git fetch in the
	   background for you a	way to mitigate	this is	to simply set up
	   another remote:

	       git remote add origin-push $(git	config remote.origin.url)
	       git fetch origin-push

	   Now when the	background process runs	git fetch origin the
	   references on origin-push won't be updated, and thus	commands like:

	       git push	--force-with-lease origin-push

	   Will	fail unless you	manually run git fetch origin-push. This
	   method is of	course entirely	defeated by something that runs	git
	   fetch --all,	in that	case you'd need	to either disable it or	do
	   something more tedious like:

	       git fetch	      #	update 'master'	from remote
	       git tag base master    #	mark our base point
	       git rebase -i master   #	rewrite	some commits
	       git push	--force-with-lease=master:base master:master

	   I.e.	create a base tag for versions of the upstream code that
	   you've seen and are willing to overwrite, then rewrite history, and
	   finally force push changes to master	if the remote version is still
	   at base, regardless of what your local remotes/origin/master	has
	   been	updated	to in the background.

	   Alternatively, specifying --force-if-includes as an ancillary
	   option along	with --force-with-lease[=<refname>] (i.e., without
	   saying what exact commit the	ref on the remote side must be
	   pointing at,	or which refs on the remote side are being protected)
	   at the time of "push" will verify if	updates	from the
	   remote-tracking refs	that may have been implicitly updated in the
	   background are integrated locally before allowing a forced update.

       -f, --force
	   Usually, git	push will refuse to update a branch that is not	an
	   ancestor of the commit being	pushed.

	   This	flag disables that check, the other safety checks in PUSH
	   RULES below,	and the	checks in --force-with-lease. It can cause the
	   remote repository to	lose commits; use it with care.

	   Note	that --force applies to	all the	refs that are pushed, hence
	   using it with push.default set to matching or with multiple push
	   destinations	configured with	remote.<name>.push may overwrite refs
	   other than the current branch (including local refs that are
	   strictly behind their remote	counterpart). To force a push to only
	   one branch, use a + in front	of the refspec to push (e.g git	push
	   origin +master to force a push to the master	branch). See the
	   <refspec>...	section	above for details.

       --force-if-includes, --no-force-if-includes
	   Force an update only	if the tip of the remote-tracking ref has been
	   integrated locally.

	   This	option enables a check that verifies if	the tip	of the
	   remote-tracking ref is reachable from one of	the "reflog" entries
	   of the local	branch based in	it for a rewrite. The check ensures
	   that	any updates from the remote have been incorporated locally by
	   rejecting the forced	update if that is not the case.

	   If the option is passed without specifying --force-with-lease, or
	   specified along with	--force-with-lease=<refname>:<expect>, it is a
	   "no-op".

	   Specifying --no-force-if-includes disables this behavior.

       --repo=<repository>
	   This	option is equivalent to	the <repository> argument. If both are
	   specified, the command-line argument	takes precedence.

       -u, --set-upstream
	   For every branch that is up to date or successfully pushed, add
	   upstream (tracking) reference, used by argument-less	git-pull(1)
	   and other commands. For more	information, see branch.<name>.merge
	   in git-config(1).

       --thin, --no-thin
	   These options are passed to git-send-pack(1). A thin	transfer
	   significantly reduces the amount of sent data when the sender and
	   receiver share many of the same objects in common. The default is
	   --thin.

       -q, --quiet
	   Suppress all	output,	including the listing of updated refs, unless
	   an error occurs. Progress is	not reported to	the standard error
	   stream.

       -v, --verbose
	   Run verbosely.

       --progress
	   Progress status is reported on the standard error stream by default
	   when	it is attached to a terminal, unless -q	is specified. This
	   flag	forces progress	status even if the standard error stream is
	   not directed	to a terminal.

       --no-recurse-submodules,	--recurse-submodules=(check|on-demand|only|no)
	   May be used to make sure all	submodule commits used by the
	   revisions to	be pushed are available	on a remote-tracking branch.
	   Possible values are:

	   check
	       Git will	verify that all	submodule commits that changed in the
	       revisions to be pushed are available on at least	one remote of
	       the submodule. If any commits are missing the push will be
	       aborted and exit	with non-zero status.

	   on-demand
	       all submodules that changed in the revisions to be pushed will
	       be pushed. If on-demand was not able to push all	necessary
	       revisions it will also be aborted and exit with non-zero
	       status.

	   only
	       all submodules will be pushed while the superproject is left
	       unpushed.

	   no
	       override	the push.recurseSubmodules configuration variable when
	       no submodule recursion is required. Similar to using
	       --no-recurse-submodules.

	   When	using on-demand	or only, if a submodule	has a
	   push.recurseSubmodules=(on-demand|only) or submodule.recurse
	   configuration, further recursion will occur.	In this	case, only is
	   treated as on-demand.

       --verify, --no-verify
	   Toggle the pre-push hook (see githooks(5)). The default is
	   --verify, giving the	hook a chance to prevent the push. With
	   --no-verify,	the hook is bypassed completely.

       -4, --ipv4
	   Use IPv4 addresses only, ignoring IPv6 addresses.

       -6, --ipv6
	   Use IPv6 addresses only, ignoring IPv4 addresses.

GIT URLS
       In general, URLs	contain	information about the transport	protocol, the
       address of the remote server, and the path to the repository. Depending
       on the transport	protocol, some of this information may be absent.

       Git supports ssh, git, http, and	https protocols	(in addition, ftp and
       ftps can	be used	for fetching, but this is inefficient and deprecated;
       do not use them).

       The native transport (i.e. git:// URL) does no authentication and
       should be used with caution on unsecured	networks.

       The following syntaxes may be used with them:

          ssh://[<user>@]<host>[:<port>]/<path-to-git-repo>

          git://<host>[:<port>]/<path-to-git-repo>

          http[s]://<host>[:<port>]/<path-to-git-repo>

          ftp[s]://<host>[:<port>]/<path-to-git-repo>

       An alternative scp-like syntax may also be used with the	ssh protocol:

          [<user>@]<host>:/<path-to-git-repo>

       This syntax is only recognized if there are no slashes before the first
       colon. This helps differentiate a local path that contains a colon. For
       example the local path foo:bar could be specified as an absolute	path
       or ./foo:bar to avoid being misinterpreted as an	ssh url.

       The ssh and git protocols additionally support ~<username> expansion:

          ssh://[<user>@]<host>[:<port>]/~<user>/<path-to-git-repo>

          git://<host>[:<port>]/~<user>/<path-to-git-repo>

          [<user>@]<host>:~<user>/<path-to-git-repo>

       For local repositories, also supported by Git natively, the following
       syntaxes	may be used:

          /path/to/repo.git/

          file:///path/to/repo.git/

       These two syntaxes are mostly equivalent, except	when cloning, when the
       former implies --local option. See git-clone(1) for details.

       git clone, git fetch and	git pull, but not git push, will also accept a
       suitable	bundle file. See git-bundle(1).

       When Git	doesn't	know how to handle a certain transport protocol, it
       attempts	to use the remote-<transport> remote helper, if	one exists. To
       explicitly request a remote helper, the following syntax	may be used:

          <transport>::<address>

       where <address> may be a	path, a	server and path, or an arbitrary
       URL-like	string recognized by the specific remote helper	being invoked.
       See gitremote-helpers(7)	for details.

       If there	are a large number of similarly-named remote repositories and
       you want	to use a different format for them (such that the URLs you use
       will be rewritten into URLs that	work), you can create a	configuration
       section of the form:

		   [url	"<actual-url-base>"]
			   insteadOf = <other-url-base>

       For example, with this:

		   [url	"git://git.host.xz/"]
			   insteadOf = host.xz:/path/to/
			   insteadOf = work:

       a URL like "work:repo.git" or like "host.xz:/path/to/repo.git" will be
       rewritten in any	context	that takes a URL to be
       "git://git.host.xz/repo.git".

       If you want to rewrite URLs for push only, you can create a
       configuration section of	the form:

		   [url	"<actual-url-base>"]
			   pushInsteadOf = <other-url-base>

       For example, with this:

		   [url	"ssh://example.org/"]
			   pushInsteadOf = git://example.org/

       a URL like "git://example.org/path/to/repo.git" will be rewritten to
       "ssh://example.org/path/to/repo.git" for	pushes,	but pulls will still
       use the original	URL.

REMOTES
       The name	of one of the following	can be used instead of a URL as
       <repository> argument:

          a remote in the Git configuration file: $GIT_DIR/config,

          a file in the $GIT_DIR/remotes directory, or

          a file in the $GIT_DIR/branches directory.

       All of these also allow you to omit the refspec from the	command	line
       because they each contain a refspec which git will use by default.

   Named remote	in configuration file
       You can choose to provide the name of a remote which you	had previously
       configured using	git-remote(1), git-config(1) or	even by	a manual edit
       to the $GIT_DIR/config file. The	URL of this remote will	be used	to
       access the repository. The refspec of this remote will be used by
       default when you	do not provide a refspec on the	command	line. The
       entry in	the config file	would appear like this:

		   [remote "<name>"]
			   url = <URL>
			   pushurl = <pushurl>
			   push	= <refspec>
			   fetch = <refspec>

       The <pushurl> is	used for pushes	only. It is optional and defaults to
       <URL>. Pushing to a remote affects all defined pushurls or all defined
       urls if no pushurls are defined.	Fetch, however,	will only fetch	from
       the first defined url if	multiple urls are defined.

   Named file in $GIT_DIR/remotes
       You can choose to provide the name of a file in $GIT_DIR/remotes. The
       URL in this file	will be	used to	access the repository. The refspec in
       this file will be used as default when you do not provide a refspec on
       the command line. This file should have the following format:

		   URL:	one of the above URL formats
		   Push: <refspec>
		   Pull: <refspec>

       Push: lines are used by git push	and Pull: lines	are used by git	pull
       and git fetch. Multiple Push: and Pull: lines may be specified for
       additional branch mappings.

   Named file in $GIT_DIR/branches
       You can choose to provide the name of a file in $GIT_DIR/branches. The
       URL in this file	will be	used to	access the repository. This file
       should have the following format:

		   <URL>#<head>

       <URL> is	required; #<head> is optional.

       Depending on the	operation, git will use	one of the following refspecs,
       if you don't provide one	on the command line. <branch> is the name of
       this file in $GIT_DIR/branches and <head> defaults to master.

       git fetch uses:

		   refs/heads/<head>:refs/heads/<branch>

       git push	uses:

		   HEAD:refs/heads/<head>

UPSTREAM BRANCHES
       Branches	in Git can optionally have an upstream remote branch. Git
       defaults	to using the upstream branch for remote	operations, for
       example:

          It's	the default for	git pull or git	fetch with no arguments.

          It's	the default for	git push with no arguments, with some
	   exceptions. For example, you	can use	the branch.<name>.pushRemote
	   option to push to a different remote	than you pull from, and	by
	   default with	push.default=simple the	upstream branch	you configure
	   must	have the same name.

          Various commands, including git checkout and	git status, will show
	   you how many	commits	have been added	to your	current	branch and the
	   upstream since you forked from it, for example "Your	branch and
	   origin/main have diverged, and have 2 and 3 different commits each
	   respectively".

       The upstream is stored in .git/config, in the "remote" and "merge"
       fields. For example, if main's upstream is origin/main:

	   [branch "main"]
	      remote = origin
	      merge = refs/heads/main

       You can set an upstream branch explicitly with git push --set-upstream
       <remote>	<branch> but Git will often automatically set the upstream for
       you, for	example:

          When	you clone a repository,	Git will automatically set the
	   upstream for	the default branch.

          If you have the push.autoSetupRemote	configuration option set, git
	   push	will automatically set the upstream the	first time you push a
	   branch.

          Checking out	a remote-tracking branch with git checkout <branch>
	   will	automatically create a local branch with that name and set the
	   upstream to the remote branch.

	   Note

	   Upstream branches are sometimes referred to as "tracking
	   information", as in "set the	branch's tracking information".

OUTPUT
       The output of "git push"	depends	on the transport method	used; this
       section describes the output when pushing over the Git protocol (either
       locally or via ssh).

       The status of the push is output	in tabular form, with each line
       representing the	status of a single ref.	Each line is of	the form:

	    <flag> <summary> <from> -> <to> (<reason>)

       If --porcelain is used, then each line of the output is of the form:

	    <flag> \t <from>:<to> \t <summary> (<reason>)

       The status of up-to-date	refs is	shown only if --porcelain or --verbose
       option is used.

       <flag>
	   A single character indicating the status of the ref:

	   (space)
	       for a successfully pushed fast-forward;

	   +
	       for a successful	forced update;

	   -
	       for a successfully deleted ref;

	   *
	       for a successfully pushed new ref;

	   !
	       for a ref that was rejected or failed to	push; and

	   =
	       for a ref that was up to	date and did not need pushing.

       <summary>
	   For a successfully pushed ref, the summary shows the	old and	new
	   values of the ref in	a form suitable	for using as an	argument to
	   git log (this is <old>..<new> in most cases,	and <old>...<new> for
	   forced non-fast-forward updates).

	   For a failed	update,	more details are given:

	   rejected
	       Git did not try to send the ref at all, typically because it is
	       not a fast-forward and you did not force	the update.

	   remote rejected
	       The remote end refused the update. Usually caused by a hook on
	       the remote side,	or because the remote repository has one of
	       the following safety options in effect:
	       receive.denyCurrentBranch (for pushes to	the checked out
	       branch),	receive.denyNonFastForwards (for forced
	       non-fast-forward	updates), receive.denyDeletes or
	       receive.denyDeleteCurrent. See git-config(1).

	   remote failure
	       The remote end did not report the successful update of the ref,
	       perhaps because of a temporary error on the remote side,	a
	       break in	the network connection,	or other transient error.

       from
	   The name of the local ref being pushed, minus its refs/<type>/
	   prefix. In the case of deletion, the	name of	the local ref is
	   omitted.

       to
	   The name of the remote ref being updated, minus its refs/<type>/
	   prefix.

       reason
	   A human-readable explanation. In the	case of	successfully pushed
	   refs, no explanation	is needed. For a failed	ref, the reason	for
	   failure is described.

PUSH RULES
       As a safety feature, the	git push command only allows certain kinds of
       updates to prevent you from accidentally	losing data on the remote.

       Because branches	and tags are intended to be used differently, the
       safety rules for	pushing	to a branch are	different from the rules for
       pushing to a tag. In the	following rules	"update" means any
       modifications except deletions and creations. Deletions and creations
       are always allowed, except when forbidden by configuration or hooks.

	1. If the push destination is a	branch (refs/heads/*): only
	   fast-forward	updates	are allowed, which means the destination must
	   be an ancestor of the source	commit.	The source must	be a commit.

	2. If the push destination is a	tag (refs/tags/*): all updates will be
	   rejected. The source	can be any object.

	3. If the push destination is not a branch or tag:

	      If the source is	a tree or blob object, any updates will	be
	       rejected

	      If the source is	a tag or commit	object,	any fast-forward
	       update is allowed, even in cases	where what's being
	       fast-forwarded is not a commit, but a tag object	which happens
	       to point	to a new commit	which is a fast-forward	of the commit
	       the last	tag (or	commit)	it's replacing.	Replacing a tag	with
	       an entirely different tag is also allowed, if it	points to the
	       same commit, as well as pushing a peeled	tag, i.e. pushing the
	       commit that existing tag	object points to, or a new tag object
	       which an	existing commit	points to.

       You can override	these rules by passing --force or by adding the
       optional	leading	+ to a refspec.	The only exceptions are	that no	amount
       of forcing will make a branch accept a non-commit object, and forcing
       won't make the remote repository	accept a push that it's	configured to
       deny.

       Hooks and configuration can also	override or amend these	rules, see
       e.g. receive.denyNonFastForwards	and receive.denyDeletes	in git-
       config(1) and pre-receive and update in githooks(5).

NOTE ABOUT FAST-FORWARDS
       When an update changes a	branch (or more	in general, a ref) that	used
       to point	at commit A to point at	another	commit B, it is	called a
       fast-forward update if and only if B is a descendant of A.

       In a fast-forward update	from A to B, the set of	commits	that the
       original	commit A built on top of is a subset of	the commits the	new
       commit B	builds on top of. Hence, it does not lose any history.

       In contrast, a non-fast-forward update will lose	history. For example,
       suppose you and somebody	else started at	the same commit	X, and you
       built a history leading to commit B while the other person built	a
       history leading to commit A. The	history	looks like this:

		 B
		/
	    ---X---A

       Further suppose that the	other person already pushed changes leading to
       A back to the original repository from which you	two obtained the
       original	commit X.

       The push	done by	the other person updated the branch that used to point
       at commit X to point at commit A. It is a fast-forward.

       But if you try to push, you will	attempt	to update the branch (that now
       points at A) with commit	B. This	does not fast-forward. If you did so,
       the changes introduced by commit	A will be lost,	because	everybody will
       now start building on top of B.

       The command by default does not allow an	update that is not a
       fast-forward to prevent such loss of history.

       If you do not want to lose your work (history from X to B) or the work
       by the other person (history from X to A), you would need to first
       fetch the history from the repository, create a history that contains
       changes done by both parties, and push the result back.

       You can perform "git pull", resolve potential conflicts,	and "git push"
       the result. A "git pull"	will create a merge commit C between commits A
       and B.

		 B---C
		/   /
	    ---X---A

       Updating	A with the resulting merge commit will fast-forward and	your
       push will be accepted.

       Alternatively, you can rebase your change between X and B on top	of A,
       with git	pull --rebase, and push	the result back. The rebase will
       create a	new commit D that builds the change between X and B on top of
       A.

		 B   D
		/   /
	    ---X---A

       Again, updating A with this commit will fast-forward and	your push will
       be accepted.

       There is	another	common situation where you may encounter
       non-fast-forward	rejection when you try to push,	and it is possible
       even when you are pushing into a	repository nobody else pushes into.
       After you push commit A yourself	(in the	first picture in this
       section), replace it with git commit --amend to produce commit B, and
       you try to push it out, because forgot that you have pushed A out
       already.	In such	a case,	and only if you	are certain that nobody	in the
       meantime	fetched	your earlier commit A (and started building on top of
       it), you	can run	git push --force to overwrite it. In other words, git
       push --force is a method	reserved for a case where you do mean to lose
       history.

EXAMPLES
       git push
	   Works like git push <remote>, where <remote>	is the current
	   branch's remote (or origin, if no remote is configured for the
	   current branch).

       git push	origin
	   Without additional configuration, pushes the	current	branch to the
	   configured upstream (branch.<name>.merge configuration variable) if
	   it has the same name	as the current branch, and errors out without
	   pushing otherwise.

	   The default behavior	of this	command	when no	<refspec> is given can
	   be configured by setting the	push option of the remote, or the
	   push.default	configuration variable.

	   For example,	to default to pushing only the current branch to
	   origin use git config remote.origin.push HEAD. Any valid <refspec>
	   (like the ones in the examples below) can be	configured as the
	   default for git push	origin.

       git push	origin :
	   Push	"matching" branches to origin. See <refspec> in	the OPTIONS
	   section above for a description of "matching" branches.

       git push	origin master
	   Find	a ref that matches master in the source	repository (most
	   likely, it would find refs/heads/master), and update	the same ref
	   (e.g.  refs/heads/master) in	origin repository with it. If master
	   did not exist remotely, it would be created.

       git push	origin HEAD
	   A handy way to push the current branch to the same name on the
	   remote.

       git push	mothership master:satellite/master dev:satellite/dev
	   Use the source ref that matches master (e.g.	 refs/heads/master) to
	   update the ref that matches satellite/master	(most probably
	   refs/remotes/satellite/master) in the mothership repository;	do the
	   same	for dev	and satellite/dev.

	   See the section describing <refspec>... above for a discussion of
	   the matching	semantics.

	   This	is to emulate git fetch	run on the mothership using git	push
	   that	is run in the opposite direction in order to integrate the
	   work	done on	satellite, and is often	necessary when you can only
	   make	connection in one way (i.e. satellite can ssh into mothership
	   but mothership cannot initiate connection to	satellite because the
	   latter is behind a firewall or does not run sshd).

	   After running this git push on the satellite	machine, you would ssh
	   into	the mothership and run git merge there to complete the
	   emulation of	git pull that were run on mothership to	pull changes
	   made	on satellite.

       git push	origin HEAD:master
	   Push	the current branch to the remote ref matching master in	the
	   origin repository. This form	is convenient to push the current
	   branch without thinking about its local name.

       git push	origin master:refs/heads/experimental
	   Create the branch experimental in the origin	repository by copying
	   the current master branch. This form	is only	needed to create a new
	   branch or tag in the	remote repository when the local name and the
	   remote name are different; otherwise, the ref name on its own will
	   work.

       git push	origin :experimental
	   Find	a ref that matches experimental	in the origin repository (e.g.
	   refs/heads/experimental), and delete	it.

       git push	origin +dev:master
	   Update the origin repository's master branch	with the dev branch,
	   allowing non-fast-forward updates.  This can	leave unreferenced
	   commits dangling in the origin repository.  Consider	the following
	   situation, where a fast-forward is not possible:

			   o---o---o---A---B  origin/master
				    \
				     X---Y---Z	dev

	   The above command would change the origin repository	to

				     A---B  (unnamed branch)
				    /
			   o---o---o---X---Y---Z  master

	   Commits A and B would no longer belong to a branch with a symbolic
	   name, and so	would be unreachable. As such, these commits would be
	   removed by a	git gc command on the origin repository.

SECURITY
       The fetch and push protocols are	not designed to	prevent	one side from
       stealing	data from the other repository that was	not intended to	be
       shared. If you have private data	that you need to protect from a
       malicious peer, your best option	is to store it in another repository.
       This applies to both clients and	servers. In particular,	namespaces on
       a server	are not	effective for read access control; you should only
       grant read access to a namespace	to clients that	you would trust	with
       read access to the entire repository.

       The known attack	vectors	are as follows:

	1. The victim sends "have" lines advertising the IDs of	objects	it has
	   that	are not	explicitly intended to be shared but can be used to
	   optimize the	transfer if the	peer also has them. The	attacker
	   chooses an object ID	X to steal and sends a ref to X, but isn't
	   required to send the	content	of X because the victim	already	has
	   it. Now the victim believes that the	attacker has X,	and it sends
	   the content of X back to the	attacker later.	(This attack is	most
	   straightforward for a client	to perform on a	server,	by creating a
	   ref to X in the namespace the client	has access to and then
	   fetching it.	The most likely	way for	a server to perform it on a
	   client is to	"merge"	X into a public	branch and hope	that the user
	   does	additional work	on this	branch and pushes it back to the
	   server without noticing the merge.)

	2. As in #1, the attacker chooses an object ID X to steal. The victim
	   sends an object Y that the attacker already has, and	the attacker
	   falsely claims to have X and	not Y, so the victim sends Y as	a
	   delta against X. The	delta reveals regions of X that	are similar to
	   Y to	the attacker.

CONFIGURATION
       Everything below	this line in this section is selectively included from
       the git-config(1) documentation.	The content is the same	as what's
       found there:

       push.autoSetupRemote
	   If set to true assume --set-upstream	on default push	when no
	   upstream tracking exists for	the current branch; this option	takes
	   effect with push.default options simple, upstream, and current. It
	   is useful if	by default you want new	branches to be pushed to the
	   default remote (like	the behavior of	push.default=current) and you
	   also	want the upstream tracking to be set. Workflows	most likely to
	   benefit from	this option are	simple central workflows where all
	   branches are	expected to have the same name on the remote.

       push.default
	   Defines the action git push should take if no refspec is given
	   (whether from the command-line, config, or elsewhere). Different
	   values are well-suited for specific workflows; for instance,	in a
	   purely central workflow (i.e. the fetch source is equal to the push
	   destination), upstream is probably what you want. Possible values
	   are:

	   nothing
	       do not push anything (error out)	unless a refspec is given.
	       This is primarily meant for people who want to avoid mistakes
	       by always being explicit.

	   current
	       push the	current	branch to update a branch with the same	name
	       on the receiving	end. Works in both central and non-central
	       workflows.

	   upstream
	       push the	current	branch back to the branch whose	changes	are
	       usually integrated into the current branch (which is called
	       @{upstream}). This mode only makes sense	if you are pushing to
	       the same	repository you would normally pull from	(i.e. central
	       workflow).

	   tracking
	       this is a deprecated synonym for	upstream.

	   simple
	       push the	current	branch with the	same name on the remote.

	       If you are working on a centralized workflow (pushing to	the
	       same repository you pull	from, which is typically origin), then
	       you need	to configure an	upstream branch	with the same name.

	       This mode is the	default	since Git 2.0, and is the safest
	       option suited for beginners.

	   matching
	       push all	branches having	the same name on both ends. This makes
	       the repository you are pushing to remember the set of branches
	       that will be pushed out (e.g. if	you always push	maint and
	       master there and	no other branches, the repository you push to
	       will have these two branches, and your local maint and master
	       will be pushed there).

	       To use this mode	effectively, you have to make sure all the
	       branches	you would push out are ready to	be pushed out before
	       running git push, as the	whole point of this mode is to allow
	       you to push all of the branches in one go. If you usually
	       finish work on only one branch and push out the result, while
	       other branches are unfinished, this mode	is not for you.	Also
	       this mode is not	suitable for pushing into a shared central
	       repository, as other people may add new branches	there, or
	       update the tip of existing branches outside your	control.

	       This used to be the default, but	not since Git 2.0 (simple is
	       the new default).

       push.followTags
	   If set to true, enable --follow-tags	option by default. You may
	   override this configuration at time of push by specifying
	   --no-follow-tags.

       push.gpgSign
	   May be set to a boolean value, or the string	if-asked. A true value
	   causes all pushes to	be GPG signed, as if --signed is passed	to
	   git-push(1).	The string if-asked causes pushes to be	signed if the
	   server supports it, as if --signed=if-asked is passed to git	push.
	   A false value may override a	value from a lower-priority config
	   file. An explicit command-line flag always overrides	this config
	   option.

       push.pushOption
	   When	no --push-option=<option> argument is given from the command
	   line, git push behaves as if	each <option> of this variable is
	   given as --push-option=<option>.

	   This	is a multi-valued variable, and	an empty value can be used in
	   a higher priority configuration file	(e.g. .git/config in a
	   repository) to clear	the values inherited from a lower priority
	   configuration files (e.g.  $HOME/.gitconfig).

	       Example:

	       /etc/gitconfig
		 push.pushoption = a
		 push.pushoption = b

	       ~/.gitconfig
		 push.pushoption = c

	       repo/.git/config
		 push.pushoption =
		 push.pushoption = b

	       This will result	in only	b (a and c are cleared).

       push.recurseSubmodules
	   May be check, on-demand, only, or no, with the same behavior	as
	   that	of push	--recurse-submodules. If not set, no is	used by
	   default, unless submodule.recurse is	set (in	which case a true
	   value means on-demand).

       push.useForceIfIncludes
	   If set to true, it is equivalent to specifying --force-if-includes
	   as an option	to git-push(1) in the command line. Adding
	   --no-force-if-includes at the time of push overrides	this
	   configuration setting.

       push.negotiate
	   If set to true, attempt to reduce the size of the packfile sent by
	   rounds of negotiation in which the client and the server attempt to
	   find	commits	in common. If false, Git will rely solely on the
	   server's ref	advertisement to find commits in common.

       push.useBitmaps
	   If set to false, disable use	of bitmaps for git push	even if
	   pack.useBitmaps is true, without preventing other git operations
	   from	using bitmaps. Default is true.

GIT
       Part of the git(1) suite

Git 2.53.0			  2026-02-01			   GIT-PUSH(1)

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