[user@dom0 ~]$ sudo qubes-dom0-update kernel-latest-4.14.12 kernel-latest-qubes-vm-4.14.12
Using sys-firewall as UpdateVM to download updates for Dom0; this may take some time...
Fedora 25 - x86_64 - Updates                    2.3 MB/s |  24 MB     00:10
Fedora 25 - x86_64                              2.6 MB/s |  50 MB     00:19
Qubes Dom0 Repository (updates)                 1.0 MB/s | 3.0 MB     00:02
Qubes Templates repository                       12 kB/s | 8.3 kB     00:00
Last metadata expiration check: -1 day, 22:01:22 ago on Thu Mar 29 18:22:53 2018.
Dependencies resolved.
================================================================================
 Package             Arch   Version                    Repository          Size
================================================================================
Installing:
 kernel-latest       x86_64 1000:4.14.12-1.pvops.qubes qubes-dom0-current  46 M
 kernel-latest-qubes-vm
                     x86_64 1000:4.14.12-1.pvops.qubes qubes-dom0-current  63 M

Transaction Summary
================================================================================
Install  2 Packages

Total download size: 108 M
Installed size: 108 M
DNF will only download packages for the transaction.
Downloading Packages:
(1/2): kernel-latest-4.14.12-1.pvops.qubes.x86_ 1.2 MB/s |  46 MB     00:38
(2/2): kernel-latest-qubes-vm-4.14.12-1.pvops.q 1.3 MB/s |  63 MB     00:47
--------------------------------------------------------------------------------
Total                                           2.3 MB/s | 108 MB     00:47
Complete!
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Qubes OS Repository for Dom0                                                                    84 MB/s | 209 kB     00:00
No package kernel-latest-4.14.12 available.
No package kernel-latest-qubes-vm-4.14.12 available.