Since Arty just mentioned GIT, I think it's about time to uncover a ReactOS GIT mirror I've been setting up recent couple of weeks.
It works pretty good so far, autoupdates every 10 minutes, so it stays quite up-to-date.
URLs: git://git.reactos.org/ - for git cloning. http://git.reactos.org - for web viewing.
As for branches, it was actually my main intention in using a DVCS, because SVN branches are greatly uncomfortable to develop anything because of the need to keep the branch up-to-date.
But, to prevent any gossips, SVN stays as our main repository, and GIT mirror is just for exploration of new possibilities, and for comfortability of working with branches - if someone wants to try that out. Usual SVN branches are still permitted.
WBR, Aleksey Bragin.