old_contents: #!/usr/bin/env python
  # coding:utf-8
  
  import os
  
  
  def main():
      os.system('git add -A')
      os.system('git commit')
      os.system('git fetch origin')
      os.system('git rebase origin/master')
      os.system('git push origin master')
  
  if __name__ == '__main__':
      main()
  
  
new_contents: #!/usr/bin/env python
  # coding:utf-8
  
  import os
  
  
  def main():
      os.system('git add -A')
      os.system('git commit')
      os.system('git fetch origin')
      os.system('git rebase origin/master')
      os.system('git push origin master')
  
  
  if __name__ == '__main__':
      main()
  
  
subject: test webhook