Remove git dir in case of a restart.

@@ -20,6 +20,7 @@ data:
     #!/bin/sh
     set -ex
     # FIXME: don't hard-code this.
+    rm -rf /tmp/git-storage/k8s-start-of-day
     git clone git@gitlab.brainfood.com:brainfood/k8s-start-of-day.git /tmp/git-storage/k8s-start-of-day
     cd /tmp/git-storage/k8s-start-of-day
     if [ -e helmfile.yaml ]; then