Searching with Special:Search for file: local: "Wind clock" is supposed to filter out results from Commons, per https://www.mediawiki.org/wiki/Help:CirrusSearch#Prefix_and_namespace
It would sometimes be nice to do that in VisualEditor's Media dialog, too.
(Requested by a logged-out editor at https://www.mediawiki.org/wiki/Topic:Tq9oex9g7zf7ms9s )