change logo url

Hi, i don’t want my logo to link back to the home page, i need to modify the themes header.php (i guess?), so that i can replace home by another url.

The code looks like this;

[ Moderator note: code fixed. Please wrap code in the backtick character or use the code button. ]

<div class="header-part-left">
        <?php $ot_logo = ot_get_option( 'logo' ); ?>
        <a>">
            <?php if(!empty($ot_logo)): ?>
            <img src="<?php echo ot_get_option( 'logo' ); ?>" alt="<?php bloginfo( 'name' ); ?>">

what part should i replace?
thanks a lot