$ git clone -n https://src.fedoraproject.org/rpms/cpdup.git /var/lib/mock/f45-build-4758-334/root/chroot_tmpdir/scmroot/cpdup
Cloning into '/var/lib/mock/f45-build-4758-334/root/chroot_tmpdir/scmroot/cpdup'...
$ git fetch origin cce5a08da42a62fdf8a286414293224adfc67ac2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cpdup
 * [new ref]         cce5a08da42a62fdf8a286414293224adfc67ac2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cce5a08 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild