resilio-sync-2.5.2-1.x86_64.rpm 335 kB/s | 11 MB 00:32
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Total 335 kB/s | 11 MB 00:32
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: Package resilio-sync-2.5.2-1.x86_64.rpm is not signed
all operate according to https://help.getsync.com/hc/en-us/articles/206178924-Installing-Sync-package-on-Linux