It is possible to set the site URL manually in the wp-config.php file.
Add these two lines to your wp-config.php, where “example.com” is the correct location of your site.
define( ‘WP_HOME’, ‘http://example.com’ );
define( ‘WP_SITEURL’, ‘http://example.com’ );
@graficavillcom Duplicator looks like the good plugin, but what do you actually want achieve – to simply duplicate a WordPress based website for content related purposes or to make sure that if one WordPress based website is down, others with the same content would stay up?