Write to Santa Monica Studio and Sony Interactive Entertainment. Demand a native PC port. Until then, respect the labor of the RPCS3 team by donating to their official Patreon, rather than downloading repacks that steal their work.
Repackers (like FitGirl, DODI, or Xatab) compress these massive files (the original PS3 disc is ~35GB) into smaller archives (sometimes 12-15GB) for easier downloading. They then automate the installation of the emulator with pre-configured settings. download repack god of war 3 pc game exclusive