For your chosen technique and leverages your hips are shooting up because the higher position is mechanically advantageous i.e. where they are strong.
If you force your hips too low at the start for your individual structure you’ve got no leverage there so they rise automatically kinda like your body finding the path of least resistance.
If you wanna get rid of the hips rising at the start you are gonna have to learn to deadlift right way for yourself and your body structure. Probably means starting your hips closer to the height they shoot up to.
Weightlifters pull off the floor with relatively upright postures one purpose. Sacrificing efficiency from a deadlift perspective in order to gain better positioning for the next phase of their clean jerks / snatches. For powerlifting deadlift purposes you’ll rarely see someone pull efficiently in those positions though there are some freaky leverages around. Sumo can get u upright also.
The fix is pretty much to deadlift properly lol. Main things would be to get the bar over midfoot at the start, activate ur lats / back tightness, shoulder/scapula positioning over the bar at the start position, proper breathing/bracing and pulling slack/hip hinging/tension in your posterior chain
Is worth noting that many lifters at all levels are successful with pronounced hip shoot at the start. Technically is less efficient but some lifters find it works better for them for various reasons. So u May not need to fix it at all or maybe only to a small degree