Thanks to genstef, I’ve finally moved my overlay hosting to overlays.gentoo.org. The new way to grab a copy is:
git clone http://overlays.gentoo.org/git/dev/dberkholz/
I’ll update the other READMEs and such floating around shortly, and attempt to set up a cron job to sync over to the old location daily or so. Flameeyes, you’re also a committer. Anyone else who would like commit access, let me know and give me a patch or two to stuff I care about.