--- a/mercurial/changelog.py	Wed Jan 15 15:47:12 2020 +0100
+++ b/mercurial/changelog.py	Wed Jan 15 15:47:21 2020 +0100
@@ -385,6 +385,9 @@
             datafile=datafile,
             checkambig=True,
             mmaplargeindex=True,
+            persistentnodemap=opener.options.get(
+                b'exp-persistent-nodemap', False
+            ),
         )
 
         if self._initempty and (self.version & 0xFFFF == revlog.REVLOGV1):