--- a/mercurial/cmdutil.py	Mon May 03 12:22:26 2021 +0200
+++ b/mercurial/cmdutil.py	Mon May 03 12:22:36 2021 +0200
@@ -1437,7 +1437,7 @@
         r = revlog.revlog(
             vfsmod.vfs(encoding.getcwd(), audit=False),
             target=target,
-            indexfile=file_[:-2] + b".i",
+            radix=file_[:-2],
         )
     return r