repo: Allow to skip setting default branch

* Useful when creating repos for LTS branches

Change-Id: Ib45f92d049688f9748cdc81b349757f8a3e39d72
1 file changed
tree: 5585e08233c0d931c5ba6bc6289ae20164f7bbe2
  1. aosp-merger/
  2. build-chromium/
  3. lineage-merger/
  4. repo/