You are not supposed to use one giant repo for everything. You are supposed to break it into pieces, one per project. See Android, which already has a wrapper

You are not supposed to use one giant repo for everything. You are supposed to break it into pieces, one per project. See Android, which already has a wrapper around git ( http://source.android.com/source/git-repo.html http://source.android.com/source/git-repo.html ) to sync multiple repositories as a single unit.