diff -r be3f33f5e232 -r 7db3c28dfdfd mercurial/templateutil.py
--- a/mercurial/templateutil.py	Thu Mar 15 21:52:47 2018 +0900
+++ b/mercurial/templateutil.py	Sat Mar 17 17:41:07 2018 +0900
@@ -406,7 +406,6 @@
         if isinstance(v, dict):
             lm = context.overlaymap(mapping, v)
             lm['index'] = i
-            lm['originalnode'] = mapping.get('node')
             yield evalrawexp(context, lm, targ)
         else:
             # v is not an iterable of dicts, this happen when 'key'