$ git clone -n https://gitee.com/src-opencloudos-rpms/libffi.git /var/lib/mock/dist-oc9-pre-build-238775-82547/root/chroot_tmpdir/scmroot/libffi
Cloning into '/var/lib/mock/dist-oc9-pre-build-238775-82547/root/chroot_tmpdir/scmroot/libffi'...
$ git fetch origin fe0ff99152ac24d464efa433d991cd25224bb05c:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libffi
 * [new ref]         fe0ff99152ac24d464efa433d991cd25224bb05c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe0ff99 import libffi-3.4.4-6.tl4