$ git clone -n https://src.fedoraproject.org/rpms/perl-Clownfish-CFC.git /var/lib/mock/f45-build-22397-591/root/chroot_tmpdir/scmroot/perl-Clownfish-CFC
Cloning into '/var/lib/mock/f45-build-22397-591/root/chroot_tmpdir/scmroot/perl-Clownfish-CFC'...
$ git fetch origin 4d4343811b579463a781e0a3714b47c75f6ba7b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Clownfish-CFC
 * [new ref]         4d4343811b579463a781e0a3714b47c75f6ba7b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d43438 0.7.0 bump