$ git clone -n https://src.fedoraproject.org/rpms/ocaml-sha.git /var/lib/mock/f38-build-side-42-init-devel-774130-27772/root/chroot_tmpdir/scmroot/ocaml-sha
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-774130-27772/root/chroot_tmpdir/scmroot/ocaml-sha'...
$ git fetch origin dbde17966cc4f6fb434af88929e8abd2fcae5517:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-sha
 * [new ref]         dbde17966cc4f6fb434af88929e8abd2fcae5517 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbde179 Rebuild OCaml packages for F38