$ git clone -n https://src.fedoraproject.org/rpms/ocaml-lablgtk3.git /var/lib/mock/f42-build-865728-173451/root/chroot_tmpdir/scmroot/ocaml-lablgtk3
Cloning into '/var/lib/mock/f42-build-865728-173451/root/chroot_tmpdir/scmroot/ocaml-lablgtk3'...
$ git fetch origin 276b3e36f3cf88e9b9bcef0cd90b13e805e28ac5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-lablgtk3
 * [new ref]         276b3e36f3cf88e9b9bcef0cd90b13e805e28ac5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 276b3e3 OCaml 5.3.0 rebuild for Fedora 42