Bug in srcset URL substitution

The srcset URL substitution has a bug. The plugin attempts to substitute local_url with remote_url. These URLs include the year and month of the upload so this fails when the current year/month is different from the image’s year/month. I had to patch the plugin with this fix:

diff --git a/wordpress/wp-content/plugins/hacklog-remote-attachment/includes/hacklogra.class.php b/wordpress/wp-content/plugins/hacklog-remote-attachment/includes/hacklogra.class.php
index ca29263..073ddb6 100644
--- a/wordpress/wp-content/plugins/hacklog-remote-attachment/includes/hacklogra.class.php
+++ b/wordpress/wp-content/plugins/hacklog-remote-attachment/includes/hacklogra.class.php
@@ -472,14 +472,14 @@ class hacklogra
      */
     public static function replace_attachurl_srcset($sources, $size_array, $image_src, $image_meta, $attachment_id)
     {
-        $local_url = self::$local_url;
+        $local_url = self::$local_baseurl;
         // using the same logic as WP
         global $wp_version;
         if ( version_compare($wp_version, "4.5", '>=') && is_ssl() && 'https' !== substr( $local_url, 0, 5 ) && parse_url( $local_url, PHP_URL_HOST ) === $_SERVER['HTTP_HOST'] ) {
             $local_url = set_url_scheme( $local_url, 'https' );
         }
         foreach((array) $sources as $index => $source) {
-            $sources[$index]['url'] = str_replace($local_url, self::$remote_url, $source['url']);
+            $sources[$index]['url'] = str_replace($local_url, self::$remote_baseurl, $source['url']);
         }
         return $sources;
     }

Please include this fix in the plugin.