title: Force updating Cocoapod with same tag
body: <p>I'm working on a private cocoapod and project using that cocoapod concurrently, and I'm having difficulty settling on the right workflow for keeping everything synchronized.</p>
  
  <p>The problem i am encountering is this: If i make a change to my cocoapod project, I've found that the only way I can get my other project to pull those changes is if I create a new tag and change the version referenced by the pod spec. As a result, I'm getting stuck with many useless versions of my pod spec.</p>
  
  <p>What I would prefer is to simply move my tag to the head of my cocoapod project and somehow re-pull the cocoapod. I've found that pod install and pod update do not seem to refresh the cocoapod in this circumstance.</p>
  
  <p>Does anyone have any recommendations for concurrently working on a cocoapod and a project that uses it?</p>