Use category slugs in includes parameter for get_categories?

I’d like to use category slugs instead of category IDs in the “includes” parameter for get_categories. Here’s the code I am using:

<?php
							$args = array(
							  'orderby' => 'name',
							  'parent' => 0,
							  'hide_empty' => 0,
							  'include' => ''
							  );
							$categories = get_categories( $args );
							foreach ( $categories as $category ) {
								echo '<option value="' . $category->cat_ID . '" name="cat">IN ' . $category->name . '</option>';
							} ?>

But I want to be able to use slugs instead of IDs when I list the categories to include. I am using a wordpress multisite, and I want the same categories to be listed in this dropdown list from site to site — but the categories have the same slugs but different IDs from site to site.

Any help would be greatly appreciated! Thank you!