Dear team.

Take a look at my output ( see time and bad response of dnf tool versus kivi package) 
I don't sure it is a bug or development issue( the fedora.pkgs.org/29/ has a kivy package). 
I don't have many options to test it , but you can have a good image on it.
Can be a clone or bad repo?
Thank you. Best regards. 

[root@desk mythcat]# dnf repolist
Last metadata expiration check: 0:19:51 ago on Sun 31 Mar 2019 12:03:21 PM EEST.
repo id                       repo name                                   status
adobe-linux-x86_64            Adobe Systems Incorporated                       3
code                          Visual Studio Code                              59
*fedora                       Fedora 29 - x86_64                          58,207
*fedora-modular               Fedora Modular 29 - x86_64                       8
packages-microsoft-com-prod   packages-microsoft-com-prod                    112
*rpmfusion-free               RPM Fusion for Fedora 29 - Free                596
*rpmfusion-free-updates       RPM Fusion for Fedora 29 - Free - Updates      237
*updates                      Fedora 29 - x86_64 - Updates                19,033
*updates-modular              Fedora Modular 29 - x86_64 - Updates            13
[root@desk mythcat]# dnf search kivy
Last metadata expiration check: 0:20:04 ago on Sun 31 Mar 2019 12:03:21 PM EEST.
No matches found.  
[root@desk mythcat]# dnf search kivy
Last metadata expiration check: 0:20:04 ago on Sun 31 Mar 2019 12:03:21 PM EEST.
No matches found.