--- a/mercurial/revlog.py	Sat Feb 29 19:31:33 2020 +0100
+++ b/mercurial/revlog.py	Tue Feb 18 19:11:13 2020 +0100
@@ -748,6 +748,13 @@
             return False
         return True
 
+    def update_caches(self, transaction):
+        if self.nodemap_file is not None:
+            if transaction is None:
+                nodemaputil.update_persistent_nodemap(self)
+            else:
+                nodemaputil.setup_persistent_nodemap(transaction, self)
+
     def clearcaches(self):
         self._revisioncache = None
         self._chainbasecache.clear()