I was looking to add scala support to org-babel, but the repo linked from http://orgmode.org/worg/org-contribute.html appears to need some server-side love:
$ git --version git version 1.7.9.2 $ git clone http://orgmode.org/w/org-mode.git Cloning into 'org-mode'... fatal: http://orgmode.org/w/org-mode.git/info/refs not found: did you run git update-server-info on the server?