I just did one similar to what you have. It was 4 meters up and nothing over the top to hang on to. I laid a ladder up against the limb just off to the trunk side. I took a large plastic garbage sack and slipped it up and over the comb, then I took a knife and cut everything off the underside of the limb at one stroke. i folded the bag up tight, climbed down the ladder and put the bag in a cardboard box and sealed it. The box had large air holes in it that were covered with 1/8" wire mesh. The flying bees could smell the queen in the box and they clustered around the outside of the box. I took them to the yard and the next day transferred them into a regular box.