$ git clone -n https://src.fedoraproject.org/rpms/ocaml-xml-light.git /var/lib/mock/f42-build-865571-173304/root/chroot_tmpdir/scmroot/ocaml-xml-light
Cloning into '/var/lib/mock/f42-build-865571-173304/root/chroot_tmpdir/scmroot/ocaml-xml-light'...
$ git fetch origin 6540cfc4ebad0f8c6aaf464247d3766de3e93faf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-xml-light
 * [new ref]         6540cfc4ebad0f8c6aaf464247d3766de3e93faf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6540cfc OCaml 5.3.0 rebuild for Fedora 42