There is no public git repository for this. I have a local one to track the changes and check which files are touched by which tweak. But it's not a linear development with bug fixes. This is more a pile of crap of trial and errors constantly reedited to test a lot of things and keep a small amount of consistent commits (one for HP, one for LOS, one for damages…) instead of spreading them everywhere . Thus having a shared repository will bring more errors than anything (I'm even working directly inside 0 A.D. data to keep updated to the latest version and resolve potential merge errors). You can still follow what I'm doing there: http://wildfiregames.com/forum/index.php?showtopic=20065 with all the patches composing the latest state (that cannot be applied liearly from a version to an other but applyed from the current master branch of 0 A.D.).