$ git clone -n https://src.fedoraproject.org/rpms/nethack.git /var/lib/mock/f41-build-772685-13507/root/chroot_tmpdir/scmroot/nethack
Cloning into '/var/lib/mock/f41-build-772685-13507/root/chroot_tmpdir/scmroot/nethack'...
$ git fetch origin 917f00a5b3810dff95387790e4acb62068f79ae4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nethack
 * [new ref]         917f00a5b3810dff95387790e4acb62068f79ae4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 917f00a Eliminate use of obsolete %patchN syntax (#2283636)