$ git clone -n https://github.com/xcp-ng-rpms/sm.git /var/lib/mock/v9.0-u-ydi1-11399-29709/root/chroot_tmpdir/scmroot/sm
Cloning into '/var/lib/mock/v9.0-u-ydi1-11399-29709/root/chroot_tmpdir/scmroot/sm'...
$ git fetch origin cf5d87523464db8cf5633b9a549e4d67d464908d:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/sm
 * [new ref]         cf5d87523464db8cf5633b9a549e4d67d464908d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf5d875 bump release for test build