getting wheezy installer code

[Ross Boylan <rossboylan@stanfordalumni.org>]

Assuming an already checked out copy of the installer
(https://wiki.debian.org/DebianInstaller/CheckOut), what's the best
way to switch to wheezy?

mr git checkout -b wheezy origin/wheezy
?

I'm not really sure what to make of the svn/git hybrid nature of
what's on my disk.

Thanks.
Ross Boylan