Summary:
See T624. I originally wrote this to require an explicit remote, but this
creates an ugly "origin:" in all the URIs and makes T270 more difficult.
Treat all branch names as implying 'origin/'.
Test Plan:
- Pulled and imported a fresh copy of libphutil without issues.
- Browsed various git repositories.
- Browsed Javelin's various branches.
- Ran upgrade script, got a bunch of clean 'origin/master' -> 'master'
conversions.
- Tried to specify an explicit remote in a default branch name.
- Unit tests.
Reviewers: nh, jungejason, btrahan
Reviewed By: btrahan
CC: aran, btrahan
Maniphest Tasks: T624
Differential Revision: https://secure.phabricator.com/D1269
