Change to git as the push protocol for dotcloud -

I have an app that uses rsync to push. To use Git, I went to .dotcloud / config and

  "push_branch": null, "push_protocol": "rsync"   
 However, now when I try to push  
 
  "push_branch": "some_branch", "push_protocol": "git"   
 I do:  
  $ dotcloud push ==> Push the code with Git, Apply "./" from some "brochure" branch error to myapp: Unable to crop the goat   
 What did I do? I could not find the docs to change the push protocol.   
 
 
 The correct way to use GIT protocol is  
  such as DotCloud Connect --git AppName [--branch branchname]   
 In that directory where dotcloud.yml stays.