Also known as a cross-arm lock or cross-arm choke. The wrestler stands behind the opponent and uses one arm to place the opponent in a half nelson. The wrestler then uses their free arm to pull the opponent's free arm across the opponent's neck, thereby using the opponent's own arm to choke them. This can be set up as a bomb technique as well; after setting the clutch, sitting down and dropping the opponent on the back, using their hands as handles.
With the heavy-weight belt on the line and the whole world's eyes on the fight, the wrestler took the arm of his opponent and crossed it around his opponent's neck in the cobra clutch, pulling up just enough to cause loss of consciousness and ultimately win.