I've moved my overlay into git. The repository is available for anonymous
checkout:

git clone http://overlays.gentoo.org/git/dev/dberkholz/

To update a checkout:

git pull

Some git howtos are available in the git documentation. In particular, see
	index.html
	tutorial.html
	everyday.html
	cvs-migration.html

Others exist online.
	http://freedesktop.org/wiki/UsingGit
	http://lists.freedesktop.org/archives/cairo/2006-February/006353.html