$ git clone -n https://src.fedoraproject.org/rpms/libkkc-data.git /var/lib/mock/f45-build-16450-486/root/chroot_tmpdir/scmroot/libkkc-data
Cloning into '/var/lib/mock/f45-build-16450-486/root/chroot_tmpdir/scmroot/libkkc-data'...
$ git fetch origin cd91b36578e7fbc43e726f8f0de9f80ff7292cbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkkc-data
 * [new ref]         cd91b36578e7fbc43e726f8f0de9f80ff7292cbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd91b36 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild