WordPress at a glance
function is not described

refresh_blog_details() WP 3.0.0

Clear the blog details cache.

No Hooks.

Return

Nothing (null).

Usage

refresh_blog_details( $blog_id );
$blog_id(int)
Blog ID.
Default: current blog

Code of refresh blog details: wp-includes/ms-blogs.php WP 5.2.1

<?php
function refresh_blog_details( $blog_id = 0 ) {
	$blog_id = (int) $blog_id;
	if ( ! $blog_id ) {
		$blog_id = get_current_blog_id();
	}

	clean_blog_cache( $blog_id );
}