The Anarcat at
@fr33domlover - funny you'd mention it, i actually wrote a perl script to do just that (tarballs from git tag, with checksums):
https://redmine.koumbit.net/projects/git-hooks/repository/revisions/master/entry/archive-tag
https://redmine.koumbit.net/projects/git-hooks/repository/revisions/master/entry/archive-tag