Start from an active hang position. Hinge at your hips and bend your knees. With straight arms, engage your lats, pulling your torso to horizontal so you're in a tucked front lever position. Then straighten your legs so your toes point to the sky. This is the start position.
Maintain PPT and core engagement, and straight arms throughout
Again, engage your lats, pull down on the bar as you squeeze your glutes, drive your feet up to the sky and fully extend your hips.
Pause at the top, and hinge at the hips to return to the start.