try checkout in deploy for github key verification

Author: mrmoje

.circleci/config.yml

@@ -55,14 +55,14 @@ jobs:
           paths:
             - venv
             - output
-            - .git
 
 
   ghp_deploy:
     docker:
       - image: circleci/python:3.6.1
     working_directory: ~/repo
     steps:
+      - checkout
       - attach_workspace:
           at: .