$ git clone -n https://src.fedoraproject.org/rpms/dieharder.git /var/lib/mock/f45-build-7508-365/root/chroot_tmpdir/scmroot/dieharder
Cloning into '/var/lib/mock/f45-build-7508-365/root/chroot_tmpdir/scmroot/dieharder'...
$ git fetch origin fed7628a7053a9f867494a8a76d0704b302aafd2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dieharder
 * [new ref]         fed7628a7053a9f867494a8a76d0704b302aafd2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fed7628 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild