--- a/mercurial/statichttprepo.py	Fri Sep 27 06:24:42 2019 +0200
+++ b/mercurial/statichttprepo.py	Fri Sep 27 05:17:30 2019 +0200
@@ -115,6 +115,7 @@
     class statichttpvfs(vfsmod.abstractvfs):
         def __init__(self, base):
             self.base = base
+            self.options = {}
 
         def __call__(self, path, mode='r', *args, **kw):
             if mode not in ('r', 'rb'):