directory ``python``, creates a remote named ``origin``, creates
remote-tracking branches, creates a local branch ``v1``, configure it
to track upstream remotes/origin/v1 branch and checks out ``v1`` into
directory ``python``, creates a remote named ``origin``, creates
remote-tracking branches, creates a local branch ``v1``, configure it
to track upstream remotes/origin/v1 branch and checks out ``v1`` into