diff -r 75fc2537d93c -r c514936d92b4 mercurial/manifest.py
--- a/mercurial/manifest.py	Thu Dec 23 14:47:52 2021 +0100
+++ b/mercurial/manifest.py	Thu Dec 23 14:48:31 2021 +0100
@@ -1819,8 +1819,8 @@
     def checksize(self):
         return self._revlog.checksize()
 
-    def revision(self, node, _df=None, raw=False):
-        return self._revlog.revision(node, _df=_df, raw=raw)
+    def revision(self, node, _df=None):
+        return self._revlog.revision(node, _df=_df)
 
     def rawdata(self, node, _df=None):
         return self._revlog.rawdata(node, _df=_df)