clear-entity-cache-on-generate-xml.patch

diff --git a/src/XmlSitemapWriter.php b/src/XmlSitemapWriter.php
index 6497da2..0839817 100644
--- a/src/XmlSitemapWriter.php
+++ b/src/XmlSitemapWriter.php
@@ -156,6 +156,7 @@ class XmlSitemapWriter extends \XMLWriter {
    * @codingStandardsIgnoreStart
    */
   public function generateXML() {
+    \Drupal::entityTypeManager()->getStorage('xmlsitemap')->resetCache();
     // @codingStandardsIgnoreEnd
     return \Drupal::service('xmlsitemap_generator')->generateChunk($this->sitemap, $this, $this->sitemap_page);
   }