$ git clone -n https://src.fedoraproject.org/rpms/obs-cef.git /var/lib/mock/f41-build-side-1-3011931-36864/root/chroot_tmpdir/scmroot/obs-cef
Cloning into '/var/lib/mock/f41-build-side-1-3011931-36864/root/chroot_tmpdir/scmroot/obs-cef'...
$ git fetch origin 76f3baa0194a6253c375998bbb301d6352a2be58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obs-cef
 * [new ref]         76f3baa0194a6253c375998bbb301d6352a2be58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76f3baa No consumers of this anymore - OBS uses standard CEF