always update changeset cache after invalidation signal

rhodecode/model/scm.py

@@ -292,6 +292,9 b' class ScmModel(BaseModel):'
         :param repo_name: this repo that should invalidation take place
         """
         CacheInvalidation.set_invalidate(repo_name=repo_name)
+        repo = Repository.get_by_repo_name(repo_name)
+        if repo:
+            repo.update_changeset_cache()
 
     def toggle_following_repo(self, follow_repo_id, user_id):