How to change JOSM imagery.generic.minimum_expires but just for one imagery?

I can set this JOSM Advanced Preference,

tag key="imagery.generic.minimum_expires" value="3600000000"

But I don't want to do it for all imagery. I only want to do it for the ABC imagery from the XYZ server. How to?

You see there is this horrible server that is wastefully responding

 HTTP/1.1 200 OK
 Cache-Control: no-cache
 Pragma: no-cache
 Expires: -1

while everybody knows the cadastral maps it serves won't change for years and years, so I don't want JOSM to bother to attempt to refresh them every hour whenever I browse them.