Access category within rss2_head hook?

Can I access the current category of a category feed with the rss2_head hook to add for example itunes tags?

Lets say I have wordpress.com/catx/feed I want to get acf field elements associated with this specific category.

Here is what I am trying to accomplish:

function itunes_head() {         $  category = get_the_category();         $  categories = get_category();         global $  post;         var_dump($  categories);         echo print_r($  post);         echo $  categories;         echo $  category; } add_filter( 'rss2_head', 'itunes_head' ); 

I am assuming that I somehow can retrieve the catx category here?