$ git clone -n https://src.fedoraproject.org/rpms/plasma-firewall.git /var/lib/mock/f41-build-847599-163991/root/chroot_tmpdir/scmroot/plasma-firewall
Cloning into '/var/lib/mock/f41-build-847599-163991/root/chroot_tmpdir/scmroot/plasma-firewall'...
$ git fetch origin a989f2374f79ab79081c5c12550d6a8c49de99c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-firewall
 * [new ref]         a989f2374f79ab79081c5c12550d6a8c49de99c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a989f23 6.1.5