I was gifted a 15” MBP (mid 2012, non retina) and its a very nice generally well looked after unit. I was able to install from a cloned Hgh Sierra macbook install and all was well (if a bit slow, got very used to SSD) but the Catalina install has stalled with 46 minutes to go, forever. (it looks like about 1/3 is installed).
Any quick fixes or should I just strt over?