old_contents: #!/usr/bin/env python3
  
  import sys
  import subprocess
  import os
  
  SSH_KEY_FILE = os.path.join(os.path.dirname(__file__), '../cache/key')
  
  def main():
      args = ['ssh', '-i', SSH_KEY_FILE] + sys.argv[1:]
      os.execvp('ssh', args)
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python3
  
  import sys
  import subprocess
  import os
  
  SSH_KEY_FILE = os.path.join(os.path.dirname(__file__), '../cache/key')
  
  def main():
      args = ['ssh', '-i', SSH_KEY_FILE, '-S', 'none'] + sys.argv[1:]
      os.execvp('ssh', args)
  
  if __name__ == '__main__':
      main()
  
subject: Disable connection sharing