$ git clone -n https://src.fedoraproject.org/rpms/fdr.git /var/lib/mock/f45-build-8816-396/root/chroot_tmpdir/scmroot/fdr
Cloning into '/var/lib/mock/f45-build-8816-396/root/chroot_tmpdir/scmroot/fdr'...
$ git fetch origin e0de11a54ad46240aeb4a69b0ff12f1f3f8023a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fdr
 * [new ref]         e0de11a54ad46240aeb4a69b0ff12f1f3f8023a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0de11a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild