$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ocamlbuild.git /var/lib/mock/f42-build-865457-173151/root/chroot_tmpdir/scmroot/ocaml-ocamlbuild
Cloning into '/var/lib/mock/f42-build-865457-173151/root/chroot_tmpdir/scmroot/ocaml-ocamlbuild'...
$ git fetch origin 64295557f360b006722669156f670144677e70c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ocamlbuild
 * [new ref]         64295557f360b006722669156f670144677e70c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6429555 OCaml 5.3.0 rebuild for Fedora 42