This was introduced by https://github.com/Squirrel/Squirrel.Mac/pull/171 :see_no_evil:: 1. Check for updates. 2. Prune existing downloads. 3. Download an update. 4. Check for updates. 5. Prune existing downloads. 6. Conditional `GET` means we don't re-download. 7. Now we don't have an update downloaded anymore.
This was introduced by #171 🙈:
GETmeans we don't re-download.