jekyll-theme-chirpy/_includes/assets-origin.html

{% comment %} Site static assets origin {% endcomment %}
{% assign origin = 'cross_origin' %}

{% if site.assets.self_host.enabled %}
  {% if site.assets.self_host.env %}
    {% if site.assets.self_host.env == jekyll.environment %}
      {% assign origin = 'self_host' %}
    {% endif %}
  {% else %}
    {% assign origin = 'self_host' %}
  {% endif %}
{% endif %}