Just go to the software update, touch the button, then touch it a second time, and that will give you all available updates immediately, regardless of your random position in the rollout process.
Not working for me on Android 16, additional taps of the "Check for update" button in the bottom-right don't change the fact that it says "Your system is up to date" and that the last change was last month.
Could be model-specific. I got the update by doing that manually on my Pixel 8 Pro, that also happens to be on the beta track so there are a few confounders. But that is the way to get the latest software that is waiting to be released to your phone, without waiting.
I had the same experience as peer comments. I'm on Pixel 8 and Google Fi. When I check for updates, I'm told I'm up-to-date with the last update being over a month old.