What is revision bytes in trezorctl get-features?

Hi. What these bytes mean? If this is a hash of firmware, where can I find revisions hashes to compare with installed on device?

It’s the git revision for the source code of that release.

you can append it to this url: https://github.com/trezor/trezor-firmware/commit/<hex goes here>

example: https://github.com/trezor/trezor-firmware/commit/393bc48b6b5a4cf4d5cd63dc039472b6cd712a8e

then if you click “Browse files” on the right side, you can browse all of the sources as they looked at that time.