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GIT-TAG(1)                                  Git Manual                                 GIT-TAG(1)

NAME
       git-tag - Create, list, delete or verify a tag object signed with GPG

SYNOPSIS
       git tag [-a | -s | -u <keyid>] [-f] [-m <msg> | -F <file>] [-e]
               <tagname> [<commit> | <object>]
       git tag -d <tagname>...
       git tag [-n[<num>]] -l [--contains <commit>] [--no-contains <commit>]
               [--points-at <object>] [--column[=<options>] | --no-column]
               [--create-reflog] [--sort=<key>] [--format=<format>]
               [--merged <commit>] [--no-merged <commit>] [<pattern>...]
       git tag -v [--format=<format>] <tagname>...

DESCRIPTION
       Add a tag reference in refs/tags/, unless -d/-l/-v is given to delete, list or verify
       tags.

       Unless -f is given, the named tag must not yet exist.

       If one of -a, -s, or -u <keyid> is passed, the command creates a tag object, and requires
       a tag message. Unless -m <msg> or -F <file> is given, an editor is started for the user to
       type in the tag message.

       If -m <msg> or -F <file> is given and -a, -s, and -u <keyid> are absent, -a is implied.

       Otherwise, a tag reference that points directly at the given object (i.e., a lightweight
       tag) is created.

       A GnuPG signed tag object will be created when -s or -u <keyid> is used. When -u <keyid>
       is not used, the committer identity for the current user is used to find the GnuPG key for
       signing. The configuration variable gpg.program is used to specify custom GnuPG binary.

       Tag objects (created with -a, -s, or -u) are called "annotated" tags; they contain a
       creation date, the tagger name and e-mail, a tagging message, and an optional GnuPG
       signature. Whereas a "lightweight" tag is simply a name for an object (usually a commit
       object).

       Annotated tags are meant for release while lightweight tags are meant for private or
       temporary object labels. For this reason, some git commands for naming objects (like git
       describe) will ignore lightweight tags by default.

OPTIONS
       -a, --annotate
           Make an unsigned, annotated tag object

       -s, --sign
           Make a GPG-signed tag, using the default e-mail address's key. The default behavior of
           tag GPG-signing is controlled by tag.gpgSign configuration variable if it exists, or
           disabled otherwise. See git-config(1).

       --no-sign
           Override tag.gpgSign configuration variable that is set to force each and every tag to
           be signed.

       -u <keyid>, --local-user=<keyid>
           Make a GPG-signed tag, using the given key.

       -f, --force
           Replace an existing tag with the given name (instead of failing)

       -d, --delete
           Delete existing tags with the given names.

       -v, --verify
           Verify the GPG signature of the given tag names.

       -n<num>
           <num> specifies how many lines from the annotation, if any, are printed when using -l.
           Implies --list.

           The default is not to print any annotation lines. If no number is given to -n, only
           the first line is printed. If the tag is not annotated, the commit message is
           displayed instead.

       -l, --list
           List tags. With optional <pattern>..., e.g.  git tag --list 'v-*', list only the tags
           that match the pattern(s).

           Running "git tag" without arguments also lists all tags. The pattern is a shell
           wildcard (i.e., matched using fnmatch(3)). Multiple patterns may be given; if any of
           them matches, the tag is shown.

           This option is implicitly supplied if any other list-like option such as --contains is
           provided. See the documentation for each of those options for details.

       --sort=<key>
           Sort based on the key given. Prefix - to sort in descending order of the value. You
           may use the --sort=<key> option multiple times, in which case the last key becomes the
           primary key. Also supports "version:refname" or "v:refname" (tag names are treated as
           versions). The "version:refname" sort order can also be affected by the
           "versionsort.suffix" configuration variable. The keys supported are the same as those
           in git for-each-ref. Sort order defaults to the value configured for the tag.sort
           variable if it exists, or lexicographic order otherwise. See git-config(1).

       --color[=<when>]
           Respect any colors specified in the --format option. The <when> field must be one of
           always, never, or auto (if <when> is absent, behave as if always was given).

       -i, --ignore-case
           Sorting and filtering tags are case insensitive.

       --column[=<options>], --no-column
           Display tag listing in columns. See configuration variable column.tag for option
           syntax.  --column and --no-column without options are equivalent to always and never
           respectively.

           This option is only applicable when listing tags without annotation lines.

       --contains [<commit>]
           Only list tags which contain the specified commit (HEAD if not specified). Implies
           --list.

       --no-contains [<commit>]
           Only list tags which don't contain the specified commit (HEAD if not specified).
           Implies --list.

       --merged [<commit>]
           Only list tags whose commits are reachable from the specified commit (HEAD if not
           specified).

       --no-merged [<commit>]
           Only list tags whose commits are not reachable from the specified commit (HEAD if not
           specified).

       --points-at <object>
           Only list tags of the given object (HEAD if not specified). Implies --list.

       -m <msg>, --message=<msg>
           Use the given tag message (instead of prompting). If multiple -m options are given,
           their values are concatenated as separate paragraphs. Implies -a if none of -a, -s, or
           -u <keyid> is given.

       -F <file>, --file=<file>
           Take the tag message from the given file. Use - to read the message from the standard
           input. Implies -a if none of -a, -s, or -u <keyid> is given.

       -e, --edit
           The message taken from file with -F and command line with -m are usually used as the
           tag message unmodified. This option lets you further edit the message taken from these
           sources.

       --cleanup=<mode>
           This option sets how the tag message is cleaned up. The <mode> can be one of verbatim,
           whitespace and strip. The strip mode is default. The verbatim mode does not change
           message at all, whitespace removes just leading/trailing whitespace lines and strip
           removes both whitespace and commentary.

       --create-reflog
           Create a reflog for the tag. To globally enable reflogs for tags, see
           core.logAllRefUpdates in git-config(1). The negated form --no-create-reflog only
           overrides an earlier --create-reflog, but currently does not negate the setting of
           core.logAllRefUpdates.

       --format=<format>
           A string that interpolates %(fieldname) from a tag ref being shown and the object it
           points at. The format is the same as that of git-for-each-ref(1). When unspecified,
           defaults to %(refname:strip=2).

       <tagname>
           The name of the tag to create, delete, or describe. The new tag name must pass all
           checks defined by git-check-ref-format(1). Some of these checks may restrict the
           characters allowed in a tag name.

       <commit>, <object>
           The object that the new tag will refer to, usually a commit. Defaults to HEAD.

CONFIGURATION
       By default, git tag in sign-with-default mode (-s) will use your committer identity (of
       the form Your Name <your AT email.address>) to find a key. If you want to use a different
       default key, you can specify it in the repository configuration as follows:

           [user]
               signingKey = <gpg-keyid>

       pager.tag is only respected when listing tags, i.e., when -l is used or implied. The
       default is to use a pager. See git-config(1).

DISCUSSION
   On Re-tagging
       What should you do when you tag a wrong commit and you would want to re-tag?

       If you never pushed anything out, just re-tag it. Use "-f" to replace the old one. And
       you're done.

       But if you have pushed things out (or others could just read your repository directly),
       then others will have already seen the old tag. In that case you can do one of two things:

        1. The sane thing. Just admit you screwed up, and use a different name. Others have
           already seen one tag-name, and if you keep the same name, you may be in the situation
           that two people both have "version X", but they actually have different "X"'s. So just
           call it "X.1" and be done with it.

        2. The insane thing. You really want to call the new version "X" too, even though others
           have already seen the old one. So just use git tag -f again, as if you hadn't already
           published the old one.

       However, Git does not (and it should not) change tags behind users back. So if somebody
       already got the old tag, doing a git pull on your tree shouldn't just make them overwrite
       the old one.

       If somebody got a release tag from you, you cannot just change the tag for them by
       updating your own one. This is a big security issue, in that people MUST be able to trust
       their tag-names. If you really want to do the insane thing, you need to just fess up to
       it, and tell people that you messed up. You can do that by making a very public
       announcement saying:

           Ok, I messed up, and I pushed out an earlier version tagged as X. I
           then fixed something, and retagged the *fixed* tree as X again.

           If you got the wrong tag, and want the new one, please delete
           the old one and fetch the new one by doing:

                   git tag -d X
                   git fetch origin tag X

           to get my updated tag.

           You can test which tag you have by doing

                   git rev-parse X

           which should return 0123456789abcdef.. if you have the new version.

           Sorry for the inconvenience.

       Does this seem a bit complicated? It should be. There is no way that it would be correct
       to just "fix" it automatically. People need to know that their tags might have been
       changed.

   On Automatic following
       If you are following somebody else's tree, you are most likely using remote-tracking
       branches (eg. refs/remotes/origin/master). You usually want the tags from the other end.

       On the other hand, if you are fetching because you would want a one-shot merge from
       somebody else, you typically do not want to get tags from there. This happens more often
       for people near the toplevel but not limited to them. Mere mortals when pulling from each
       other do not necessarily want to automatically get private anchor point tags from the
       other person.

       Often, "please pull" messages on the mailing list just provide two pieces of information:
       a repo URL and a branch name; this is designed to be easily cut&pasted at the end of a git
       fetch command line:

           Linus, please pull from

                   git://git..../proj.git master

           to get the following updates...

       becomes:

           $ git pull git://git..../proj.git master

       In such a case, you do not want to automatically follow the other person's tags.

       One important aspect of Git is its distributed nature, which largely means there is no
       inherent "upstream" or "downstream" in the system. On the face of it, the above example
       might seem to indicate that the tag namespace is owned by the upper echelon of people and
       that tags only flow downwards, but that is not the case. It only shows that the usage
       pattern determines who are interested in whose tags.

       A one-shot pull is a sign that a commit history is now crossing the boundary between one
       circle of people (e.g. "people who are primarily interested in the networking part of the
       kernel") who may have their own set of tags (e.g. "this is the third release candidate
       from the networking group to be proposed for general consumption with 2.6.21 release") to
       another circle of people (e.g. "people who integrate various subsystem improvements"). The
       latter are usually not interested in the detailed tags used internally in the former group
       (that is what "internal" means). That is why it is desirable not to follow tags
       automatically in this case.

       It may well be that among networking people, they may want to exchange the tags internal
       to their group, but in that workflow they are most likely tracking each other's progress
       by having remote-tracking branches. Again, the heuristic to automatically follow such tags
       is a good thing.

   On Backdating Tags
       If you have imported some changes from another VCS and would like to add tags for major
       releases of your work, it is useful to be able to specify the date to embed inside of the
       tag object; such data in the tag object affects, for example, the ordering of tags in the
       gitweb interface.

       To set the date used in future tag objects, set the environment variable
       GIT_COMMITTER_DATE (see the later discussion of possible values; the most common form is
       "YYYY-MM-DD HH:MM").

       For example:

           $ GIT_COMMITTER_DATE="2006-10-02 10:31" git tag -s v1.0.1

DATE FORMATS
       The GIT_AUTHOR_DATE and GIT_COMMITTER_DATE environment variables support the following
       date formats:

       Git internal format
           It is <unix timestamp> <time zone offset>, where <unix timestamp> is the number of
           seconds since the UNIX epoch.  <time zone offset> is a positive or negative offset
           from UTC. For example CET (which is 1 hour ahead of UTC) is +0100.

       RFC 2822
           The standard email format as described by RFC 2822, for example Thu, 07 Apr 2005
           22:13:13 +0200.

       ISO 8601
           Time and date specified by the ISO 8601 standard, for example 2005-04-07T22:13:13. The
           parser accepts a space instead of the T character as well. Fractional parts of a
           second will be ignored, for example 2005-04-07T22:13:13.019 will be treated as
           2005-04-07T22:13:13.

               Note
               In addition, the date part is accepted in the following formats: YYYY.MM.DD,
               MM/DD/YYYY and DD.MM.YYYY.

NOTES
       When combining multiple --contains and --no-contains filters, only references that contain
       at least one of the --contains commits and contain none of the --no-contains commits are
       shown.

       When combining multiple --merged and --no-merged filters, only references that are
       reachable from at least one of the --merged commits and from none of the --no-merged
       commits are shown.

SEE ALSO
       git-check-ref-format(1). git-config(1).

GIT
       Part of the git(1) suite

Git 2.34.1                                  05/20/2024                                 GIT-TAG(1)

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