Badges: fix repo update script

Signed-off-by: Aurélien Bompard <aurelien@bompard.org>

roles/openshift-apps/badges/templates/checkout-rules-repo.sh

@@ -10,7 +10,7 @@ if [ ! -d "$DIR/.git" ]; then
 fi
 
 git config --global --add safe.directory $DIR
-git fetch origin
+git -C $DIR fetch origin
 {% if env == 'staging' %}
 git -C $DIR checkout staging
 {% endif %}