Default the login logo url points to WordPress.org. If you have a custom WordPress login logo, or a completely custom WordPress login page design, then you should probably change the login logo url to your main site or anything that you think is more relevant.
Currently, we don’t have such option to change the site logo URL to your own custom URL. But you can achieve it by creating a child theme and apply a filter hook for the custom logo. Please visit below link and change anchor (href)link to your own custom link.
<img src="https://www.latino.ski/wp-content/uploads/2017/08/home-icon.png" alt="Accueil" width="40" height="30" />