How to download a Chrome binary for any given revision (kinda):
- Type in your version (something like “85.0.4173.0”) in the version information lookup field in OmahaProxy. If you don’t have the version string, this JSON lists a bunch of the most recent releases. Note that you can adjust the query parameters.
- Note down the resulting “Branch Base Position” (something like “778145”).
- Go to this page (or this one if you need more granularity), select the folder of your operating system and find the folder that has the number closest to your branch base position.