$ git clone -n https://src.fedoraproject.org/rpms/bout++.git /var/lib/mock/f40-build-801446-143788/root/chroot_tmpdir/scmroot/bout++
Cloning into '/var/lib/mock/f40-build-801446-143788/root/chroot_tmpdir/scmroot/bout++'...
$ git fetch origin 36239bf4590f8698868d42123f46e7e1a45e393a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bout++
 * [new ref]         36239bf4590f8698868d42123f46e7e1a45e393a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36239bf Add missing patch