$ git clone -n https://src.fedoraproject.org/rpms/manafirewall.git /var/lib/mock/f45-build-17998-506/root/chroot_tmpdir/scmroot/manafirewall
Cloning into '/var/lib/mock/f45-build-17998-506/root/chroot_tmpdir/scmroot/manafirewall'...
$ git fetch origin 84b03c773b9d46f46c038cb564bf641dd37c2e4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/manafirewall
 * [new ref]         84b03c773b9d46f46c038cb564bf641dd37c2e4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84b03c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild