Downloading http://cdn-fastly.deb.debian.org/debian/dists/stretch/InRelease...
Downloading http://cdn-fastly.deb.debian.org/debian/dists/stretch/Release...
Downloading http://cdn-fastly.deb.debian.org/debian/dists/stretch/Release.gpg...
gpgv: WARNING: multiple signatures detected.  Only the first will be checked.
gpgv: Good signature from "Debian Archive Automatic Signing Key (8/jessie) <ftpmaster@debian.org>"

Mirror [mirror32]: http://cdn-fastly.deb.debian.org/debian/ stretch successfully added.
You can run 'aptly mirror update mirror32' to download repository contents.
