Clarification about --trust-sender option

[realsimix]

Hi,

I'd like to ask about the new --trust-sender option: where exactly does it have an effect?

Pull: rsync --trust-sender [OPTION...] [USER@]HOST:SRC... [DEST] Push: rsync --trust-sender [OPTION...] SRC... [USER@]HOST:DEST

Is it so that --trust-sender only has an effect on the pull variant and not with push?

I didn't see an error or warning in both cases so I was wondering if it really only changes something with the pull direction? Also looking at the source code didn't really help and I'm still a bit confused.

Thanks, Simon