--- a/mercurial/obsutil.py	Sun Jan 05 22:12:02 2025 -0500
+++ b/mercurial/obsutil.py	Sun Jan 05 22:23:31 2025 -0500
@@ -520,7 +520,7 @@
     """small class to represent a successors with some metadata about it"""
 
     def __init__(self, *args, **kwargs):
-        super(_succs, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.markers = set()
 
     def copy(self):