$ git clone -n https://src.fedoraproject.org/rpms/OpenNL.git /var/lib/mock/f41-build-1111439-20153/root/chroot_tmpdir/scmroot/OpenNL
Cloning into '/var/lib/mock/f41-build-1111439-20153/root/chroot_tmpdir/scmroot/OpenNL'...
$ git fetch origin f010a463616e21db8b60cbe45d8537ca65d3c4b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/OpenNL
 * [new ref]         f010a463616e21db8b60cbe45d8537ca65d3c4b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f010a46 Eliminate use of obsolete %patchN syntax (#2283636)