Hopefully this means git will be coming to google code! (one of the big reasons they rejected it in favor of hg was that git was so inefficient over http before)
On a similar issue requesting darcs support (which was closed WontFix), a google engineer wrote:
>Supporting Subversion and Mercurial is a lot of effort for our small team.
>Adding another version control system is a lot of work and darcs would not be
>our first choice.
I read that as meaning Git would be next in line, but they are not in any hurry to add it. Personally, I'd rather they concentrated on really making what they do support shine. You can always host the source on git(hub|orious) and add a Sources wiki page that points there.