Apply SSL to Branch deploy without Netlify DNS

Site: dynamic-pegasus-5be1a0.netlify.app

Hi - following this guide: [Support Guide] How to use Netlify’s branch deploy feature without Netlify DNS. I want to use Netlify’s branch deploy feature without Netlify DNS.([Support Guide] How to use Netlify’s branch deploy feature without Netlify DNS)

Step 4. I would like to extend SSL cert to my branch deploy - staging.<site_domain>

Thank you,
HK

Looks like it’s already done.