$ git clone -n https://src.fedoraproject.org/rpms/ocaml-camlp5.git /var/lib/mock/f40-build-784453-133438/root/chroot_tmpdir/scmroot/ocaml-camlp5
Cloning into '/var/lib/mock/f40-build-784453-133438/root/chroot_tmpdir/scmroot/ocaml-camlp5'...
$ git fetch origin 5a4afc50945de2738f1c177c3397015bb40cb208:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-camlp5
 * [new ref]         5a4afc50945de2738f1c177c3397015bb40cb208 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a4afc5 Bump and rebuild