use archive urls if github tokens are given
be explicit about the ref that we're grabbing
Revert "Merge pull request #937 from github/auto-deploy-on-default-branch"

This reverts commit 6ffaa6b96ad52bd866118bff9f3e1b6459e298cd, reversing
changes made to 85733a4944a218e704a172a7a865d76dabeadfed.
Merge pull request #938 from github/ops-works-shuffle

OpsWorks Shuffle