diff --git a/zuul/executor/server.py b/zuul/executor/server.py
index bf0faa1169..5731ef1ec1 100644
--- a/zuul/executor/server.py
+++ b/zuul/executor/server.py
@@ -3938,8 +3938,7 @@ class ExecutorServer(BaseMergeServer):
                 self.merger.updateRepo(
                     task.connection_name, task.project_name,
                     repo_state=task.repo_state,
-                    zuul_event_id=task.zuul_event_id, build=task.build,
-                    process_worker=self.process_worker)
+                    zuul_event_id=task.zuul_event_id, build=task.build)
                 source = self.connections.getSource(task.connection_name)
                 project = source.getProject(task.project_name)
                 task.canonical_name = project.canonical_name
diff --git a/zuul/merger/merger.py b/zuul/merger/merger.py
index a704dc76a1..4d9d012717 100644
--- a/zuul/merger/merger.py
+++ b/zuul/merger/merger.py
@@ -616,7 +616,7 @@ class Repo(object):
                             branch)
                 Repo._setRef(f"refs/remotes/origin/{branch}", hexsha, repo)
 
-    def deleteRef(self, path, repo=None, zuul_event_id=None):
+    def deleteRef(self, path, zuul_event_id=None):
         # This is only used in tests
         ref_log = get_annotated_logger(
             logging.getLogger("zuul.Repo.Ref"), zuul_event_id)
@@ -1139,7 +1139,7 @@ class Merger(object):
                                 retry_timeout=retry_timeout)
 
     def updateRepo(self, connection_name, project_name, repo_state=None,
-                   zuul_event_id=None, build=None, process_worker=None):
+                   zuul_event_id=None, build=None):
         """Fetch from origin if needed
 
         If repo_state is None, then this will always git fetch.