I wrote up the new git workflows into a doc intended for inclusion in the Cordova Documentation (it provides much nicer formatting than the wiki). You can check it out here:
https://googledrive.com/host/0B8sLcyOAEX-XUHAxNXhISE5rTTg/guide_contributing_index.md.html Please let me know if you spot any problems or have any questions. If people like the idea of a contributor entry in the Guide, I'll commit this into edge. Braden