"Apple Color Profiles GitHub" or "Display P3 ICC profile archive.org."
You should never need to download a "repack" or an installer for this. The profile is available directly from reputable sources or is hidden inside your OS. apple rgb color profile download repack
It typically uses a gamma of 1.8, unlike the modern standard of 2.2. "Apple Color Profiles GitHub" or "Display P3 ICC
To repackage the Apple RGB color profile: apple rgb color profile download repack