How to change logo image link in child function.php

Website: http://smcpurebuzz.com/news/ Message: I am trying to change the link of the logo by copying the function catcheverest_header_left() from catcheverest functions.php to my child theme funtion file where I change the line <?php echo esc_url( home_url( '/' ) ); ?> to http://smcpurebuzz.com/, but I just get a syntax error message. Could you please help me with the correct code to let me change the link of the logo? I do not know much about php coding, so I am not sure if I chould copy the whole code for catcheverest_header_left() or just the part I need to change. Any of the ways didt work, I just get the message that its something wrong with the code. Thank you so much for your help and great theme!