$ git clone -n https://src.fedoraproject.org/rpms/ocaml-qcheck.git /var/lib/mock/f42-build-865966-173613/root/chroot_tmpdir/scmroot/ocaml-qcheck
Cloning into '/var/lib/mock/f42-build-865966-173613/root/chroot_tmpdir/scmroot/ocaml-qcheck'...
$ git fetch origin b1919c077f2a4f1a972b0c6b1d0984df691967e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-qcheck
 * [new ref]         b1919c077f2a4f1a972b0c6b1d0984df691967e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1919c0 OCaml 5.3.0 rebuild for Fedora 42