Alternating h1 and h2 title tags, depending if page is home page or not

Alternate title tags in WordPress

<?php if(is_front_page()) : ?>
<!--  This is a homepage -->
<h1 class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></h1>
<?php endif; ?>

<?php if(!is_front_page()) : ?>
<!-- This is not a homepage -->
<h2 class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></h2>
<?php endif; ?>