$ git clone -n https://src.fedoraproject.org/rpms/python-dbusmock.git /var/lib/mock/f40-build-2213573-52338/root/chroot_tmpdir/scmroot/python-dbusmock
Cloning into '/var/lib/mock/f40-build-2213573-52338/root/chroot_tmpdir/scmroot/python-dbusmock'...
$ git fetch origin bd1b9aca9410125290a0fa095bc878aeb5af4572:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dbusmock
 * [new ref]         bd1b9aca9410125290a0fa095bc878aeb5af4572 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bd1b9ac Update to 0.30.2