I have no idea what the name is, but it's basically crotcheting
If you look at the picture above, the cord goes back around to the right and folded into a bight, the bight is inserted into the loop on the front.
The loop in the picture is then tightened down on the bight you just did and the surplus will enlarge the bight which is now your new loop facing left.
Make the loop smaller and wrap the cord back around to the left and... well you see where this is going
There's a more elaborate way to do a quick deploy weave, a bit more labour intense but with a high prepper factor
Found a video on Youtube
If you have a webbing handle I recommend to start by making a bundle of cord about the thickness of a finger and the length of the handle, tightly wrapped from one end to the other, as a filler and then use the rest to do the quick release weaving on top.
Gives a thicker and more comfortable handle and lot more available paracord
Both these wraps will let you unravel as much cord as you need, you just lock the last loop with something, normally the end of the cord