How to change logo URL?

I am using header layout 6. I want to change the URL of the logo to another link.
I tried changing the coder here header-layout-6.php:
<?php if ( is_front_page() ) : ?>
<h1 class=”site-title”>
<?php the_custom_logo(); ?>

<?php if( true == get_theme_mod( ‘envy-blog_header_site_title_activate’, true ) ) { ?>

<?php bloginfo( ‘name’ ); ?>

<?php } ?>
</h1>

but it does not work. Can you tell me how to change the LOGO URL to another custom URL?

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