$ git clone -n https://src.fedoraproject.org/rpms/snownews.git /var/lib/mock/f45-build-36187-702/root/chroot_tmpdir/scmroot/snownews
Cloning into '/var/lib/mock/f45-build-36187-702/root/chroot_tmpdir/scmroot/snownews'...
$ git fetch origin 844022109396ec7653002a748caf5d5882b3c677:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snownews
 * [new ref]         844022109396ec7653002a748caf5d5882b3c677 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8440221 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild