$ git clone -n https://src.fedoraproject.org/rpms/snownews.git /var/lib/mock/f41-build-814550-14252/root/chroot_tmpdir/scmroot/snownews
Cloning into '/var/lib/mock/f41-build-814550-14252/root/chroot_tmpdir/scmroot/snownews'...
$ git fetch origin 057af2364ba002eabc0dffb2371b90041eb9eefa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snownews
 * [new ref]         057af2364ba002eabc0dffb2371b90041eb9eefa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 057af23 Eliminate use of obsolete %patchN syntax (#2283636)