Which command WinSCP uses to set times?

I'm trying to get rid of the following error dialog while performing the Synchronize command:
Since I'm not the owner of the files (but still have group write permissions), I've added the CAP_FOWNER capability to the touch executable in other to fix the set time permission issue. It works as expected, meaning I can change the timestamps using the touch command like this:
But, unfortunately, WinSCP seems to be not using the touch command to 'set times' because the annoying error still persists. Is there any config that I can change in order to force WinSCP to use the touch command (in Linux remotes, of course)? Any ideas/workarounds?

Regards.

PS.: Although I've previously removed the "Preserve timestamp" setting, we all know that this flag is imposed throughout the sync process.

It's the remote scp process/command that sets the timestamps.

Btw, you can turn off "Preserve timestamps" even with synchronization, if you remove "Modification time" from comparison criteria.