$ git clone -n https://src.fedoraproject.org/rpms/ocaml-jst-config.git /var/lib/mock/f41-build-811508-147409/root/chroot_tmpdir/scmroot/ocaml-jst-config
Cloning into '/var/lib/mock/f41-build-811508-147409/root/chroot_tmpdir/scmroot/ocaml-jst-config'...
$ git fetch origin a109d21ca2c4b1e02856c20d3c9a47e1dd322bd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-jst-config
 * [new ref]         a109d21ca2c4b1e02856c20d3c9a47e1dd322bd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a109d21 OCaml 5.2.0 for Fedora 41