$ git clone -n https://src.fedoraproject.org/rpms/ocaml-curl.git /var/lib/mock/f38-build-side-42-init-devel-800618-28144/root/chroot_tmpdir/scmroot/ocaml-curl
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-800618-28144/root/chroot_tmpdir/scmroot/ocaml-curl'...
$ git fetch origin bbdd1027f5511596934e80766f9792b28a9240c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-curl
 * [new ref]         bbdd1027f5511596934e80766f9792b28a9240c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bbdd102 Bump release and rebuild