$ git clone -n https://src.fedoraproject.org/rpms/sanlock.git /var/lib/mock/f41-build-side-2-python-2713004-30508/root/chroot_tmpdir/scmroot/sanlock
Cloning into '/var/lib/mock/f41-build-side-2-python-2713004-30508/root/chroot_tmpdir/scmroot/sanlock'...
$ git fetch origin 070934ec8eb1182b0c64bde3c6e528e0be093093:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sanlock
 * [new ref]         070934ec8eb1182b0c64bde3c6e528e0be093093 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 070934e new upstream release, adopt sysusers