Use a lower bar or a stable base under a regular pull-up bar for this exercise. On the lower position you should be able to squat under the bar while holding it with stretched arms.\r\nJump up and back to achieve an assisted backswing.\r\nWhen you are getting into the top position of your jump pull back with your arms and flex your posterior chain to push your body towards the bar. Keep pulling back and push your torso forward and over the bar while you hold your feet forward. You should end up with your upper abs on the bar and your feet and torso leaning forward and stopped in this position.
Beginner - 1x5 Rep
Master - 2x8 Rep