Clear the cache of a particular site in multisite

Hello,

There is a problem clearing the cache for a site that uses a different domain.

See the following configuration example:

site 1 home: https://www.example.com
site 2 home: https://www.example.com/testsite
site 3 home: https://123.example.com

$sites = get_sites();
foreach ($sites as $site) {
switch_to_blog($site->blog_id);

global $file_prefix;
wp_cache_clean_cache($file_prefix);

restore_current_blog();
}

For it to work I have to do the following:

$sites = get_sites();
foreach ($sites as $site) {
switch_to_blog($site->blog_id);

global $file_prefix, $supercachedir;
$supercachedir=get_supercache_dir(get_current_blog_id());
wp_cache_clean_cache($file_prefix);

restore_current_blog();
}

I intend to clear a particular site’s cache if necessary.