diff --git a/appveyor.yml b/appveyor.yml
index 2c8cdb7c08fc..c6bff2ee60d9 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,8 +19,11 @@ environment:
 
 
 install:
+    - "git config core.symlinks true"
+    - "git reset --hard"
     - "%PYTHON%\\python.exe -m pip install -r test-requirements.txt"
     - "git submodule update --init typeshed"
+    - "cd typeshed && git reset --hard && cd .."
     - "%PYTHON%\\python.exe setup.py -q install"
 
 build: off