message: add a comment to deploy flow
diff: @@ -833,6 +833,12 @@ impl DeployAcceptor {
  .ignore(),
  );
  } else if matches!(event_metadata.source, Source::Peer(_)) {
  + // If `is_new` is `false`, the deploy was previously stored. If the source is `Peer`,
  + // we got here as a result of a Fetch<Deploy>, and the incoming deploy could have a
  + // different set of approvals to the one already stored. We can treat the incoming
  + // approvals as finalized and now try and store them. If storing them returns `true`,
  + // (indicating the approvals are different to any previously stored) we can announce a
  + // new deploy accepted, causing the fetcher to be notified.
  return effect_builder
  .store_finalized_approvals(
  *event_metadata.deploy.hash(),
  