If I understand correctly from this discussion, we can now use this mirror for improved speeds:
$ cat /etc/ostree/remotes.d/fedora.conf
[remote "fedora"]
url=https://ostree.fedoraproject.org
gpg-verify=true
gpgkeypath=/etc/pki/rpm-gpg/
contenturl=mirrorlist=https://ostree.fedoraproject.org/mirrorlist
If we actually curl that URL to see where it leads, we get:
$ curl https://ostree.fedoraproject.org/mirrorlist
https://d2uk5hbyrobdzx.cloudfront.net/
And if we follow to https://d2uk5hbyrobdzx.cloudfront.net/ we can find all files.
If this is running now on CDN, a user should not have bad speeds (unless he is the only ostree user in a his area so he has the bad luck to be the only one to use those edge servers).
Please confirm if this is the case, or if the community should invest time to create mirrors.