code: def override_ssh_auth_env():
      
      ssh_auth_sock = "SSH_AUTH_SOCK"
      old_ssh_auth_sock = os.environ.get(ssh_auth_sock)
  
      del os.environ[ssh_auth_sock]
  
      yield
  
      if old_ssh_auth_sock:
          os.environ[ssh_auth_sock] = old_ssh_auth_sock
docs: Override the `$SSH_AUTH_SOCK `env variable to mock the absence of an SSH agent.