dnf update - @koji-override-0 - remove kernel

edit

I did sudo dnf update, and i get this

[noam@localhost-localdomain ~]$ sudo dnf update
[sudo] password for noam: 
Last metadata expiration check: 2:28:31 ago on Wed Jul 20 14:33:34 2016.
Dependencies resolved.
================================================================================
 Package          Arch     Version                     Repository          Size
================================================================================
Installing:
 kernel           x86_64   4.6.4-201.fc23              updates             62 k
 kernel-core      x86_64   4.6.4-201.fc23              updates             19 M
 kernel-modules   x86_64   4.6.4-201.fc23              updates             21 M
Upgrading:
 edk2-ovmf        noarch   20160418gita8c39ba-2.fc23   updates            2.8 M
 filezilla        x86_64   3.14.1-3.fc23               updates            4.1 M
 kde-settings     noarch   23-13.fc23                  updates             52 k
 kernel-headers   x86_64   4.6.4-201.fc23              updates            1.0 M
 qt-settings      noarch   23-13.fc23                  updates             25 k
Removing:
 kernel           x86_64   4.2.3-300.fc23              @koji-override-0     0  
 kernel-core      x86_64   4.2.3-300.fc23              @koji-override-0    51 M
 kernel-modules   x86_64   4.2.3-300.fc23              @koji-override-0    17 M

Transaction Summary
================================================================================
Install  3 Packages
Upgrade  5 Packages
Remove   3 Packages

Total download size: 48 M
Is this ok [y/N]: n
Operation aborted.
[noam@localhost-localdomain ~]$

• the removing part is very strange..

first, idk this repo - @koji-override-0 I read a bit about that repo here

http://forums.fedoraforum.org/showthr...

but i'm still not sure if that's a good repo - accept the update, or a bad repo - abort the update (and may remove the repo?)

So should I update? Or abort the update and remove this repo?

Because I think, because the names of the packages that will be removed, that if I do accept this update, so it's may remove my kernel? It's sounds weird - why the system will remove his kernel, but that's the name of the packages, so I really don't know..

So what do I need to do? - I'm using fedora 23