$ git clone -n https://src.fedoraproject.org/rpms/ocaml-num.git /var/lib/mock/f45-build-20612-572/root/chroot_tmpdir/scmroot/ocaml-num
Cloning into '/var/lib/mock/f45-build-20612-572/root/chroot_tmpdir/scmroot/ocaml-num'...
$ git fetch origin 8d984c88df4f0026938f9bf4772ece3e6cfd5ffd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-num
 * [new ref]         8d984c88df4f0026938f9bf4772ece3e6cfd5ffd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d984c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild