$ git clone -n https://src.fedoraproject.org/rpms/libcpucycles.git /var/lib/mock/f45-build-16016-481/root/chroot_tmpdir/scmroot/libcpucycles
Cloning into '/var/lib/mock/f45-build-16016-481/root/chroot_tmpdir/scmroot/libcpucycles'...
$ git fetch origin e01d46fb8aeb390e6361b6aae58581cc1837bf69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcpucycles
 * [new ref]         e01d46fb8aeb390e6361b6aae58581cc1837bf69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e01d46f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild