diff -r 346af7687c6f -r 89a2afe31e82 mercurial/error.py
--- a/mercurial/error.py	Fri Nov 27 17:00:00 2020 -0500
+++ b/mercurial/error.py	Fri Nov 27 17:03:29 2020 -0500
@@ -394,8 +394,7 @@
 
 
 class UnknownVersion(Abort):
-    """generic exception for aborting from an encounter with an unknown version
-    """
+    """generic exception for aborting from an encounter with an unknown version"""
 
     def __init__(self, msg, hint=None, version=None):
         self.version = version