zola/src/templates/sitemap.xml

<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    {% for page in pages %}
        <url>
            <loc>{{ page.permalink | safe }}</loc>
            {% if page.date %}
                <lastmod>{{ page.date }}</lastmod>
            {% endif %}
        </url>
    {% endfor %}
    {% for section in sections %}
        <url>
            <loc>{{ section.permalink | safe }}</loc>
        </url>
    {% endfor %}
</urlset>