diff -r 04f2f94836a5 -r 590f2364d33a mercurial/revlog.py
--- a/mercurial/revlog.py	Mon May 03 12:25:01 2021 +0200
+++ b/mercurial/revlog.py	Mon May 03 12:25:12 2021 +0200
@@ -1556,7 +1556,7 @@
                     % (
                         self._indexfile if self._inline else self._datafile,
                         length,
-                        realoffset,
+                        offset,
                         len(d) - startoffset,
                     )
                 )