diff -r c10c87c8fe79 -r 508dfd1c18df hgext/churn.py
--- a/hgext/churn.py	Wed Sep 09 17:04:44 2020 +0900
+++ b/hgext/churn.py	Sun Oct 04 13:17:57 2020 +0900
@@ -23,6 +23,7 @@
     patch,
     pycompat,
     registrar,
+    scmutil,
 )
 
 cmdtable = {}
@@ -98,7 +99,7 @@
         exclude_pats=opts[b'exclude'],
     )
     revs, makefilematcher = logcmdutil.makewalker(repo, wopts)
-    for ctx in cmdutil.walkchangerevs(repo, revs, makefilematcher, prep):
+    for ctx in scmutil.walkchangerevs(repo, revs, makefilematcher, prep):
         continue
 
     progress.complete()