$ git clone -n https://src.fedoraproject.org/rpms/python-commoncode.git /var/lib/mock/f39-build-1943521-43182/root/chroot_tmpdir/scmroot/python-commoncode
Cloning into '/var/lib/mock/f39-build-1943521-43182/root/chroot_tmpdir/scmroot/python-commoncode'...
$ git fetch origin fcef526fe0d63b81a3a849ed2b6bbe9ee5a40d48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-commoncode
 * [new ref]         fcef526fe0d63b81a3a849ed2b6bbe9ee5a40d48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fcef526 Initial import