$ git clone -n https://src.fedoraproject.org/rpms/ocaml-zed.git /var/lib/mock/f38-build-side-42-init-devel-774152-27772/root/chroot_tmpdir/scmroot/ocaml-zed
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-774152-27772/root/chroot_tmpdir/scmroot/ocaml-zed'...
$ git fetch origin 40849b41a63a247ecd762c3d051af1be52326b62:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-zed
 * [new ref]         40849b41a63a247ecd762c3d051af1be52326b62 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40849b4 Rebuild OCaml packages for F38