--- a/mercurial/hg.py	Mon Sep 21 10:09:39 2020 -0700
+++ b/mercurial/hg.py	Mon Sep 21 11:12:58 2020 -0700
@@ -1049,7 +1049,7 @@
     When overwrite is set, changes are clobbered, merged else
 
     returns stats (see pydoc mercurial.merge.applyupdates)"""
-    return mergemod.update(
+    return mergemod._update(
         repo,
         node,
         branchmerge=False,