Even if someone managed to "rip" the game files, GT7 requires a constant connection to PlayStation Network (PSN) servers to save progress or access the campaign. This makes traditional "cracked" repacks functionally impossible.
If you own a PlayStation console and the game, you can stream it to your PC using the official PS Remote Play Emulation (Legacy Titles): gran turismo 7 activation key repack
Be extremely careful with sites that ask you to download "repack" files. These often contain viruses or ransomware designed to look like game installers. Even if someone managed to "rip" the game