how do i pick up the new rpms in updates-testing?

[Robert P. J. Day]

almost certainly a stupid question, but how do i force "dnf update"
to consult the latest mirrors to see the new packages now available?

i can *see* here:

http://dl.fedoraproject.org/pub/fedora/linux/updates/testing/22/x86_64/n/

the new NetworkManager rpm that solves a particular problem i've run
into, but no variation of "dnf update" i run will pick it up.

what's the secret recipe?

rday