We use heroku web hooks on master to auto deploy a lot of our web-tools. CocoaPods.org had it enabled but it never worked, until last night at 4am NYC time, and it rolled back to a commit from a few days ago, twice. Glad to have the webhook working, but not strictly sure what triggered it yet.
It was resolved by Florian Hanke redeploying master. For now the webhook is turned off, until it can be tested correctly.