$ git clone -n https://src.fedoraproject.org/rpms/python-databases.git /var/lib/mock/f40-build-2706671-71189/root/chroot_tmpdir/scmroot/python-databases
Cloning into '/var/lib/mock/f40-build-2706671-71189/root/chroot_tmpdir/scmroot/python-databases'...
$ git fetch origin b8ff460c6a50b1b995415c7f34ddd9ec82d042a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-databases
 * [new ref]         b8ff460c6a50b1b995415c7f34ddd9ec82d042a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8ff460 Stop running mysql tests