diff -r 095a0a63ad88 -r b2de94e59702 mercurial/repository.py
--- a/mercurial/repository.py	Wed Dec 05 15:30:56 2018 -0800
+++ b/mercurial/repository.py	Tue Dec 18 09:34:32 2018 -0800
@@ -1477,7 +1477,7 @@
     narrowpats = interfaceutil.Attribute(
         """Matcher patterns for this repository's narrowspec.""")
 
-    def narrowmatch():
+    def narrowmatch(match=None, includeexact=False):
         """Obtain a matcher for the narrowspec."""
 
     def setnarrowpats(newincludes, newexcludes):