Disable caching of the git repository.
Disable caching of the git repository.

Currently Trac doesn't support this very well, cf.
https://groups.google.com/d/msg/trac-users/SyUI6QL31Iw/laEx1m1fltYJ

django/code.djangoproject.com,django/code.djangoproject.com,django/code.djangoproject.com,django/code.djangoproject.com