mercurial/revlog.py

--- a/mercurial/revlog.py	Mon Dec 21 22:31:16 2015 +0900
+++ b/mercurial/revlog.py	Sun Dec 20 17:48:20 2015 -0800
@@ -339,6 +339,11 @@
             return False
 
     def clearcaches(self):
+        self._cache = None
+        self._basecache = None
+        self._chunkcache = (0, '')
+        self._pcache = {}
+
         try:
             self._nodecache.clearcaches()
         except AttributeError: