They need to test a repair procedure on Earth first?
Seems like repairing a puncture or crack in the hull should have been carefully planned and tested BEFORE this happened.
Or, maybe the Russian module has always been a catastrophe waiting to happen, and NASA has ignored that fact in political deference to the “International” Space Station?
Couldn’t they just sit on it?
Read a SciFi story about that many many years ago (50) in
ASTOUNDING Science Fiction.