I suppose you have no bee keeping equipment, this makes it ever more difficult.
I'm now putting myself into your shoes and would try to make a make shift bee box.
Here, bees love to go into walls of buildings, only about 4 inches of with, they
start building combs from the top, usually a cross beam from a floor.
You could fashion yourself something like that, perhaps 4" wide lumber, then put wood sheeting over,
screwed, so you can undo easily to take honey out and check. Size,..?? it could be 4 feet wide x 6 feet high.
Or build something from the link below.
You could perhaps use a straw or grass basket for a start right away.
Oh...black closing doesn't get you anywhere, don't take it down at night.
Spray a straw or grass basket inside, with half water and sugar solution, then with a good tap on the
branch knock the bees inside, then slowly turn the basket over, upside down, put on piece of wood, screw down
with some screws, make a hole about the size of your index finger.

Konrad