Add Custom Logo URL

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By default, the logo on your website will lead users to your homepage. If you wish to alter/change the URL of the logo in your header, use the following PHP snippet:

// Add custom logo URL
function prefix_custom_logo_link() {
        // The logo
    $custom_logo_id = get_theme_mod( 'custom_logo' );

    // Check if has logo
    if ( $custom_logo_id ) {

        // Attr
            $custom_logo_attr = array(
                        'class' => 'custom-logo',
                        'itemprop' => 'logo',
                );

                // Image alt
                $image_alt = get_post_meta( $custom_logo_id, '_wp_attachment_image_alt', true );
                if ( empty( $image_alt ) ) {
                        $custom_logo_attr['alt'] = get_bloginfo( 'name', 'display' );
                }

            // Get the image
            $html = sprintf( '<a href="%1$s" class="custom-logo-link" rel="home" itemprop="url">%2$s</a>',
                        esc_url( 'https://wpolympus.com' ),
                        wp_get_attachment_image( $custom_logo_id, 'full', false, $custom_logo_attr )
                );

        }

        // Return
    return $html;   
}
add_filter( 'get_custom_logo', 'prefix_custom_logo_link' );

Change https://wpolympus.com per your need.

All PHP snippets should be added via a child theme’s functions.php file.