$ git clone -n https://src.fedoraproject.org/rpms/ocaml-extlib.git /var/lib/mock/f40-build-2013383-45878/root/chroot_tmpdir/scmroot/ocaml-extlib
Cloning into '/var/lib/mock/f40-build-2013383-45878/root/chroot_tmpdir/scmroot/ocaml-extlib'...
$ git fetch origin 4261424d52c4590c26cc33d2aebdf15178528ef9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-extlib
 * [new ref]         4261424d52c4590c26cc33d2aebdf15178528ef9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4261424 OCaml 5.1.1 rebuild for Fedora 40