$ git clone -n https://src.fedoraproject.org/rpms/python-barbicanclient.git /var/lib/mock/f39-build-1619260-38672/root/chroot_tmpdir/scmroot/python-barbicanclient
Cloning into '/var/lib/mock/f39-build-1619260-38672/root/chroot_tmpdir/scmroot/python-barbicanclient'...
$ git fetch origin 497f6346c8c528057c803398dec1bb978a76152c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-barbicanclient
 * [new ref]         497f6346c8c528057c803398dec1bb978a76152c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 497f634 Switch to sphinx-build to create doc