$ git clone -n https://gitee.com/opencloudos-stream/f2fs-tools.git /var/lib/mock/dist-oc9-epol-build-166494-79771/root/chroot_tmpdir/scmroot/f2fs-tools
Cloning into '/var/lib/mock/dist-oc9-epol-build-166494-79771/root/chroot_tmpdir/scmroot/f2fs-tools'...
$ git fetch origin 0e9d3aadd42564ae76fd4ad6a81864ea7e5cd5c1:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/f2fs-tools
 * [new ref]         0e9d3aadd42564ae76fd4ad6a81864ea7e5cd5c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e9d3aa update