old_contents: from flask_restful import Resource
  from zou.app.utils import git
  
  
  class IndexResource(Resource):
      def get(self):
          git_hash = git.get_git_revision_hash()
          return {
              'api': 'Unit Image Pipeline Server',
              'git_hash': git_hash.decode("utf-8")
          }
  
new_contents: from flask_restful import Resource
  from zou.app.utils import git
  
  
  class IndexResource(Resource):
      def get(self):
          git_hash = git.get_git_revision_hash()
          return {
              'api': 'Zou API',
              'git_hash': git_hash.decode("utf-8")
          }
  
subject: Rename API in index