git-mktag - Creates a tag object
Reads a tag contents on standard input and creates a tag object that can also be
used to sign other objects.
The output is the new tag’s <object> identifier.
A tag signature file, to be fed to this command’s standard input, has a
very simple fixed format: four lines of
followed by some optional
free-form message (some tags created by older
Git may not have tagger
line). The message, when 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.
Part of the git(1)