The server for GitHub pages (including mine) sets
CacheControl: max-age=600. It means the cache is set to last only for ten minutes, which is undesirable.
Is it possible to control this value and to set also
I know that there is no direct access to the
.htaccess file or an equivalent, but I am looking for indirect access via some sort of settings or confirmation, or proof that it is impossible.
Note: this question is not a duplicate of Caching assets in Github pages (github.io) which answers whether Github pages have any caching at all.