$ git clone -n https://src.fedoraproject.org/rpms/ocaml-astring.git /var/lib/mock/f42-build-865576-173304/root/chroot_tmpdir/scmroot/ocaml-astring
Cloning into '/var/lib/mock/f42-build-865576-173304/root/chroot_tmpdir/scmroot/ocaml-astring'...
$ git fetch origin edcdc1ffa6c4c3d316a837d3774c344e5e422ef3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-astring
 * [new ref]         edcdc1ffa6c4c3d316a837d3774c344e5e422ef3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at edcdc1f OCaml 5.3.0 rebuild for Fedora 42