CocoaPods/CocoaPods — pull request #1958 by neonichu (2014-03-29 20:15:16+00:00)
Title: Fix :head option for Pods from HTTP source.

HTTP doesn't implement `checkout_options`.

While specifying :head for Pods from HTTP sources doesn't really make sense, it feels like it should still work so that the author of a `Podfile`doesn't have to know about the download source of each Pod he uses.