Print the message of a git tag

I got just the message (but the message included some extraneous stuff like PGP signature and signed-off-by lines) when I said:

git show -s --format=%B <tag>

Note the -s.

I'm not sure what version of git this requires, but with recent versions you can also do:

git tag -l --format='%(contents)' <tag name>

to get only the tag message by itself.