SYNOPSIS
git mktag < signature_file
DESCRIPTION
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.
Tag Format
A tag signature file has a very simple fixed format: four lines of
object <sha1>
type <typename>
tag <tagname>
tagger <tagger>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.
GIT
Part of the git(1) suite