Yes, you read that correctly. Someone manually patched the video file to ensure that every single headshot in the nightclub is pixel-perfect. The "patch" also fixes a specific 3-second audio desync that occurred during the "Dinner reservation" monologue in earlier BluRay rips.
This is where things get interesting. The suffix is the digital equivalent of a master key. johnwick2014swesub1080pblurayh264aacmr patched
are "hardcoded" (permanently burned into the video) or included as a default track, which may be distracting if you do not require them. "Patched": Yes, you read that correctly