--- a/hgext/sqlitestore.py	Sun Oct 21 22:26:00 2018 -0400
+++ b/hgext/sqlitestore.py	Wed Oct 03 14:57:29 2018 -0700
@@ -381,6 +381,12 @@
     def __iter__(self):
         return iter(pycompat.xrange(len(self._revisions)))
 
+    def hasnode(self, node):
+        if node == nullid:
+            return False
+
+        return node in self._nodetorev
+
     def revs(self, start=0, stop=None):
         return storageutil.iterrevs(len(self._revisions), start=start,
                                     stop=stop)