$ git clone -n https://src.fedoraproject.org/rpms/sanlock.git /var/lib/mock/f45-build-35590-696/root/chroot_tmpdir/scmroot/sanlock
Cloning into '/var/lib/mock/f45-build-35590-696/root/chroot_tmpdir/scmroot/sanlock'...
$ git fetch origin c734d44fc78acc05b6f63da95929fa2f92e57ed0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sanlock
 * [new ref]         c734d44fc78acc05b6f63da95929fa2f92e57ed0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c734d44 New upstream release 5.1.1