$ git clone -n https://src.fedoraproject.org/rpms/corosync.git /var/lib/mock/f45-build-5241-338/root/chroot_tmpdir/scmroot/corosync
Cloning into '/var/lib/mock/f45-build-5241-338/root/chroot_tmpdir/scmroot/corosync'...
$ git fetch origin 6bc682fafa5f8fe269080cfcdbefcbecc1972497:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/corosync
 * [new ref]         6bc682fafa5f8fe269080cfcdbefcbecc1972497 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6bc682f Fix smoke test