diff --git a/hgext/remotefilelog/debugcommands.py b/hgext/remotefilelog/debugcommands.py
--- a/hgext/remotefilelog/debugcommands.py
+++ b/hgext/remotefilelog/debugcommands.py
@@ -119,7 +119,7 @@ def debugindex(orig, ui, repo, file_=Non
     if format not in (0, 1):
         raise error.Abort(_(b"unknown format %d") % format)
 
-    generaldelta = r.version & revlog.FLAG_GENERALDELTA
+    generaldelta = r.get_revlog()._format_flags & revlog.FLAG_GENERALDELTA
     if generaldelta:
         basehdr = b' delta'
     else:
@@ -144,9 +144,9 @@ def debugindex(orig, ui, repo, file_=Non
     for i in r:
         node = r.node(i)
         if generaldelta:
-            base = r.deltaparent(i)
+            base = r.get_revlog().deltaparent(i)
         else:
-            base = r.chainbase(i)
+            base = r.get_revlog().chainbase(i)
         if format == 0:
             try:
                 pp = r.parents(node)
@@ -156,8 +156,8 @@ def debugindex(orig, ui, repo, file_=Non
                 b"% 6d % 9d % 7d % 6d % 7d %s %s %s\n"
                 % (
                     i,
-                    r.start(i),
-                    r.length(i),
+                    r.get_revlog().start(i),
+                    r.get_revlog().length(i),
                     base,
                     r.linkrev(i),
                     short(node),
@@ -171,10 +171,10 @@ def debugindex(orig, ui, repo, file_=Non
                 b"% 6d %04x % 8d % 8d % 8d % 6d % 6d % 6d % 6d %s\n"
                 % (
                     i,
-                    r.flags(i),
-                    r.start(i),
-                    r.length(i),
-                    r.rawsize(i),
+                    r.get_revlog().flags(i),
+                    r.get_revlog().start(i),
+                    r.get_revlog().length(i),
+                    r.get_revlog().rawsize(i),
                     base,
                     r.linkrev(i),
                     pr[0],