diff --git a/mercurial/pure/parsers.py b/mercurial/pure/parsers.py
--- a/mercurial/pure/parsers.py
+++ b/mercurial/pure/parsers.py
@@ -62,6 +62,8 @@
         return self._lgt + len(self._extra)
 
     def append(self, tup):
+        if 'nodemap' in vars(self):
+            self.nodemap[tup[7]] = len(self)
         self._extra.append(tup)
 
     def _check_index(self, i):
diff --git a/mercurial/revlog.py b/mercurial/revlog.py
--- a/mercurial/revlog.py
+++ b/mercurial/revlog.py
@@ -213,6 +213,10 @@
             nodemap[n] = r
         return nodemap
 
+    def append(self, tup):
+        self.nodemap[tup[7]] = len(self)
+        super(revlogoldindex, self).append(tup)
+
     def clearcaches(self):
         self.__dict__.pop('nodemap', None)
 
@@ -2189,7 +2193,6 @@
             node,
         )
         self.index.append(e)
-        self.nodemap[node] = curr
 
         # Reset the pure node cache start lookup offset to account for new
         # revision.