If server redirects from http to https, libfetch detects this, but
wrongly uses the old url scheme to determine the port. This subsequently
leads to the following OpenSSL error:
139741541575496:error:1408F10B:SSL routines:ssl3_get_record:wrong version number:ssl/record/ssl3_record.c:331:
Using the new scheme fixes this. This error message comes from trying
to connect to port 80 with TLS, it can also be observed by issuing
$ openssl s_client -connect alpinelinux.org:80
This bug was introduced in commit:
7158474 libfetch: keep http auth only if redirect is for the same host