$ git clone -n https://src.fedoraproject.org/rpms/ocaml-astring.git /var/lib/mock/f40-build-2112496-50666/root/chroot_tmpdir/scmroot/ocaml-astring
Cloning into '/var/lib/mock/f40-build-2112496-50666/root/chroot_tmpdir/scmroot/ocaml-astring'...
$ git fetch origin 6f7b248cb0afd74d4e7a05713cd2aaaef449d2bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-astring
 * [new ref]         6f7b248cb0afd74d4e7a05713cd2aaaef449d2bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f7b248 OCaml 5.1.1 + s390x code gen fix for Fedora 40