During an AskGooglebot session, an SEO professional asked John Mueller about how Googlebot interacts with 307 redirects.
John explained that Google does not interact with them. 307 redirects are not real redirects, he revealed. He said that HSTS tells users to only get the HTTPS version of a page.
HSTS, or HTTP Strict-Transport-Security response header, causes a 307 redirect.
Even if a tool says that a 307 redirect is there, it’s not really there as far as Googlebot is concerned.
If the URL redirects, which is usually the case with an HTTP and HTTPS site, then Googlebot will follow those redirects, and won’t see the 307 that you would see in the browser.