message: Sync strategy
  sync block count.
diff: @@ -420,7 +420,7 @@ where
  let total_num = latest_block_chain
  .current_header()
  .number()
  - .saturating_sub(ancestor.number);
  + .saturating_sub(latest_ancestor.number);
  info!(
  "[sync] sync strategy : {:?}, sync blocks: {:?}, time : {:?}, avg: {:?}",
  fetcher.peer_selector().strategy(),
  