It touched his foot.
Watch the ref directly next to him.
He is staring down at the ball, then the ball rolls towards Bachmeijer’s foot & changes it’s roll, the official immediately makes the “start the clock” signal with his arm (winding it in the air).
The clock doesn’t start until the ball is touched. So the official winding the clock means he saw the ball touch his foot.
Replay can’t overturn that unless it clearly shows otherwise, which it didn’t.
Stanford’s coach in the post game presser said the official told him he saw it touch his foot, so it was the right call.
Sidenote: The official “experts” on NBC, like Matt Austin, are wrong as much as they are correct. There are videos you can look up where other officials will pull out rule books & break down how he & others are wrong about rules. For instance, in the example above, the “expert” didn’t think that the ball might have touched the player & didn’t notice the official signal that it did touch him in real time?
My favorites were when both Mike Tirico & Doug Flutie called him out in the same season against the Virginia teams.
When VT had a huge INT called back because the DL jumped offside, & Austin said he wouldn’t call it, that he would give him a warning first. And Flutie responded “or you could just make the correct call, and then tell him to line up onsides the next time.” LOL
And when ND sacked the UVA QB & it was an obvious fumble, and replay confirmed it, Austin said he wouldn’t call it because the ball wasn’t moving enough for him on the way down. And Tirico made the reply that if it’s moving at all, it’s a fumble, and he and the replay booth both agree it was moving & was a fumble.
Matt Austin is good for at least one blunder a game. He wasn’t a good official when he was in the field. And it shows in the booth.