$ git clone -n https://src.fedoraproject.org/rpms/libmad.git /var/lib/mock/f45-build-16507-487/root/chroot_tmpdir/scmroot/libmad
Cloning into '/var/lib/mock/f45-build-16507-487/root/chroot_tmpdir/scmroot/libmad'...
$ git fetch origin 40182ca2fb1b5cf1a4a76e1e1e7aa588f3fe5c8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmad
 * [new ref]         40182ca2fb1b5cf1a4a76e1e1e7aa588f3fe5c8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40182ca simplify conditional