I am attempting to set up a duplicate copy of WordPress to test with a new site design. I made a copy of the WordPress code folder and copy of the database and changed wp-config.php to point to the database copy. However, when I enter .../wordpress_copy/wp-admin/ in my browser, it takes me back to the original folder. I assume that's because the database copy still says that's where the app is located. But this is like a catch-22. How do I login to the admin in the /wordpress_copy/ folder?