Error Code 12 is almost never a "broken repack." It is a hardware or OS policy conflict. Do not delete the 100GB download. Simply adjust your paging file (Virtual Memory) to at least 16GB and disable your antivirus temporarily. The game will install.
If you suspect hard drive corruption:
He scrambled to open his file explorer. The C: drive bar was a deep, angry red. 124 MB remaining. dodi repack error code 12