Isao Okano demonstrates a variation of Kata Ha Jime (Single Wing Choke)
Opponent is in Turtle, facing you
Place
Left Hand - Belt Grip (Palm Down)
Right Hand - Collar Grip (Palm Up)
Yank opponent towards you, breaking his posture
Right Hand follows collar towards opponents chest, clears head, and cinches collar across opponent's neck
Simultaneously, drive forward into opponent, and Left Hand swims toward hooking opponent's nearside leg - sprawl legs to pin opponent while choke is applied