diff -r bc138f2a2e47 -r f58a13c52726 mercurial/interfaces/repository.py
--- a/mercurial/interfaces/repository.py	Mon May 03 12:20:35 2021 +0200
+++ b/mercurial/interfaces/repository.py	Mon May 03 12:20:45 2021 +0200
@@ -1181,13 +1181,6 @@
         """
     )
 
-    version = interfaceutil.Attribute(
-        """Revlog version number.
-
-        TODO this is revlog specific and should not be exposed.
-        """
-    )
-
     _generaldelta = interfaceutil.Attribute(
         """Whether generaldelta storage is being used.