git-mktag(1)

# git-mktag(1) Manual Page

## NAME

git-mktag - Creates a tag object with extra validation

## SYNOPSIS

    git mktag

## DESCRIPTION

Reads a tag’s contents on standard input and creates a tag object. The output is the new tag’s <object> identifier.

This command is mostly equivalent to git-hash-object(1) invoked with `-t tag -w --stdin`. I.e. both of these will create and write a tag found in `my-tag`:

    git mktag <my-tag
    git hash-object -t tag -w --stdin <my-tag

The difference is that mktag will die before writing the tag if the tag doesn’t pass a git-fsck(1) check.

The "fsck" check done by mktag is stricter than what git-fsck(1) would run by default in that all `fsck.<msg-id>` messages are promoted from warnings to errors (so e.g. a missing "tagger" line is an error).

Extra headers in the object are also an error under mktag, but ignored by git-fsck(1). This extra check can be turned off by setting the appropriate `fsck.<msg-id>` variable:

    git -c fsck.extraHeaderEntry=ignore mktag <my-tag-with-headers

## OPTIONS

--strict

  By default mktag turns on the equivalent of git-fsck(1) `--strict` mode. Use `--no-strict` to disable it.

## Tag Format

A tag signature file, to be fed to this command’s standard input, has a very simple fixed format: four lines of

    object <hash>
    type <typename>
    tag <tagname>
    tagger <tagger>

followed by some optional free-form message (some tags created by older Git may not have a `tagger` line). The message, when it exists, is separated by a blank line from the header. The message part may contain a signature that Git itself doesn’t care about, but that can be verified with gpg.

## GIT

Part of the git(1) suite