submit and author resubmits: the commit must be a hash git knows (checked in the author's workdir or the Logbook checkout) and is stored in full; HEAD, placeholders and unknown hashes are refused

harbor/core.py

@@ -761,6 +761,7 @@ class Harbor(WorkMixin, ExtrasMixin, FlowMixin, LaunchMixin):
         if not reviewers:
             raise HarborError("no reviewer: name one, or set reviewers in the project file")
         canonical = parse_scope(scope)[0] if scope else None
+        commit = self.resolve_commit(author, commit)
 
         def do(c):
             now = self.now()
@@ -822,6 +823,8 @@ class Harbor(WorkMixin, ExtrasMixin, FlowMixin, LaunchMixin):
             self.require_running(agent, "move review items")
         if to_state == "landed":
             self.check_landing_policy(item_id)
+        if is_author and commit:
+            commit = self.resolve_commit(agent, commit)
 
         def do(c):
             now = self.now()