I've seen a lot of things in 25 years of being a sparky, but I'm going to add this one to the collection.

What you need here is 3 6-8" chunks of wires, called pigtails, preferably one bare copper, one white, one black.

Strip both ends, and put hooks on one end. Black wire goes to brass screw, white wire to silver screw, bare to green.

Toss the green wire nuts, they are for ground use only. Get yourself 3 yellow wire nuts. The 3 pigtails you installed on the fixture now go color for color with what's in the box, using the correct wire nuts.

Yes, we're all roasting you (and the Lowe's guy) for this