diff -r d645fdfb749f -r 4133c0b0fcd7 mercurial/statichttprepo.py
--- a/mercurial/statichttprepo.py	Sat Jul 15 22:40:51 2017 +0200
+++ b/mercurial/statichttprepo.py	Sat Jul 15 23:05:04 2017 +0200
@@ -124,6 +124,7 @@
 
         vfsclass = build_opener(ui, authinfo)
         self.vfs = vfsclass(self.path)
+        self.cachevfs = vfsclass(self.vfs.join('cache'))
         self._phasedefaults = []
 
         self.names = namespaces.namespaces()