$ git clone -n https://src.fedoraproject.org/rpms/ocaml-jane-street-headers.git /var/lib/mock/f40-build-783955-133234/root/chroot_tmpdir/scmroot/ocaml-jane-street-headers
Cloning into '/var/lib/mock/f40-build-783955-133234/root/chroot_tmpdir/scmroot/ocaml-jane-street-headers'...
$ git fetch origin 4e9a4d2282716b8df544d7264af9334e83f08206:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-jane-street-headers
 * [new ref]         4e9a4d2282716b8df544d7264af9334e83f08206 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e9a4d2 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild