Backing against the 57North ID LDAP database for SSH public keys, git.57north.org.uk provides simple git repository hosting. At present, all 57North ID holders have access to this - once HackHub is integrated with 57North ID, this will be restricted to members.
git clone firstname.lastname@example.org:<username>/<repo>
ssh email@example.com perms <username>/<repo> + READERS @all
ssh firstname.lastname@example.org perms <username>/<repo> + WRITERS <otherusername>