$ git clone -n https://src.fedoraproject.org/rpms/cpphs.git /var/lib/mock/f40-build-776314-128763/root/chroot_tmpdir/scmroot/cpphs
Cloning into '/var/lib/mock/f40-build-776314-128763/root/chroot_tmpdir/scmroot/cpphs'...
$ git fetch origin 17b25c4804ef3e0ddf4507070408f1bf270a6376:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cpphs
 * [new ref]         17b25c4804ef3e0ddf4507070408f1bf270a6376 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17b25c4 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild