diff --git a/rhodecode/events/repo.py b/rhodecode/events/repo.py
--- a/rhodecode/events/repo.py
+++ b/rhodecode/events/repo.py
@@ -130,6 +130,10 @@ def _commits_as_dict(event, commit_ids, 
             # matters we short circuit then.
             return []
 
+    # we failed to remove all needed_commits from all repositories
+    if needed_commits:
+        raise ValueError(f'Unexpectedly not found {needed_commits} in all available repos {repos}')
+
     missing_commits = set(commit_ids) - set(c['raw_id'] for c in commits)
     if missing_commits:
         log.error('Inconsistent repository state. '
@@ -298,7 +302,7 @@ class RepoVCSEvent(RepoEvent):
     def __init__(self, repo_name, extras):
         self.repo = Repository.get_by_repo_name(repo_name)
         if not self.repo:
-            raise Exception('repo by this name %s does not exist' % repo_name)
+            raise Exception(f'repo by this name {repo_name} does not exist')
         self.extras = extras
         super().__init__(self.repo)