The only I see this happening is as follows:
1) Try and lose as much weight as is practical between now and then without hurting your strength. You are 205 lbs. right now, so depending on your height and current body fat level, you might be able to bring the requirement down to as low as 260 by losing 20 lbs.
2) I would do box cleans where you are cleaning from boxes or trays that are set up so the bar is in the hang position already. This forces you to clean without any rebound effect and will really force you to jump with the weight in your hands instead of doing an upright row/reverse curl with some knee kick.
Drop all other lifting except for perhaps some front or back squats after the box cleans. I would do a Bill Starr type routine where you lift M/W/F on Heavy/Light/Medium schedule. Work up to a heavy set over may 5-7 sets on Monday. On Wednesday go up to 80% of Monday's top set, and Friday go up to 90% of Monday's top set. You don't have to do singles and it might be better if you do doubles or triples. I would not go more than 3 reps per set, though.
The following Monday, you would add what you can. If you think you'll be able to drop 20 lbs. by the time of the competition, you will need to average a 7.5 lb. increase each Monday on your top set. If you drop no weight, you will need to average a 10 lb. increase each Monday, which is less likely.
After the cleans, do some squats, perhaps with a similar setup. Finish with some shrugs and call it a day.
In the final week before the competition, I would practice the actual hang clean instead of the box cleans, and work up to a max single (assuming you've been using doubles or triples).
I don't see you being able to accomplish this any other way, to be honest.