$ git clone -n https://src.fedoraproject.org/rpms/ocaml-xmlrpc-light.git /var/lib/mock/f45-build-20770-573/root/chroot_tmpdir/scmroot/ocaml-xmlrpc-light
Cloning into '/var/lib/mock/f45-build-20770-573/root/chroot_tmpdir/scmroot/ocaml-xmlrpc-light'...
$ git fetch origin 5fe8eea7c572ba47d25f33a99dbc5ef7b14c3667:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-xmlrpc-light
 * [new ref]         5fe8eea7c572ba47d25f33a99dbc5ef7b14c3667 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5fe8eea Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild