$ git clone -n https://src.fedoraproject.org/rpms/ocaml-alcotest.git /var/lib/mock/f38-build-side-42-init-devel-723114-27298/root/chroot_tmpdir/scmroot/ocaml-alcotest
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-723114-27298/root/chroot_tmpdir/scmroot/ocaml-alcotest'...
$ git fetch origin 3eb91ca2d730368344c47ec8f3159289bebfc182:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-alcotest
 * [new ref]         3eb91ca2d730368344c47ec8f3159289bebfc182 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3eb91ca Rebuild OCaml packages for F38