Just replace the islandora repository. for testing.

custom.Makefile

@@ -17,5 +17,7 @@ hocr_test: generate-secrets
 	done
 	docker compose exec -T drupal with-contenv bash -lc 'chown -R nginx:nginx /var/www/drupal/ ; su nginx -s /bin/bash -c "composer install"'
 	$(MAKE) starter-finalize ENVIRONMENT=starter_dev
-docker compose exec -T drupal with-contenv bash -lc 'drush --root /var/www/drupal/web -l $${DRUPAL_DEFAULT_SITE_URL} migrate:import islandora_hocr_media_uses'
 
+	docker compose exec -T drupal with-contenv bash -lc 'rm -rf /var/www/drupal/web/modules/contrib/islandora'
+	docker compose exec -T drupal with-contenv bash -lc 'cd /var/www/drupal/web/modules/contrib; git clone -b hocr https://github.com/Islandora/islandora.git'
+	docker compose exec -T drupal with-contenv bash -lc 'drush --root /var/www/drupal/web -l $${DRUPAL_DEFAULT_SITE_URL} migrate:import islandora_hocr_media_uses'