WordPress Version: 5.5
/**
* Gets a blog post from any site on the network.
*
* This function is similar to get_post(), except that it can retrieve a post
* from any site on the network, not just the current site.
*
* @since MU (3.0.0)
*
* @param int $blog_id ID of the blog.
* @param int $post_id ID of the post being looked for.
* @return WP_Post|null WP_Post object on success, null on failure
*/
function get_blog_post($blog_id, $post_id)
{
switch_to_blog($blog_id);
$post = get_post($post_id);
restore_current_blog();
return $post;
}