$ git clone -n https://src.fedoraproject.org/rpms/ocaml-time-now.git /var/lib/mock/f39-build-1903885-42868/root/chroot_tmpdir/scmroot/ocaml-time-now
Cloning into '/var/lib/mock/f39-build-1903885-42868/root/chroot_tmpdir/scmroot/ocaml-time-now'...
$ git fetch origin d9c0aca84484f08dd81f0c863c62e1c1a914cd54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-time-now
 * [new ref]         d9c0aca84484f08dd81f0c863c62e1c1a914cd54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9c0aca Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild