Description of problem:

Installing ovirt-relerase-master.rpm:
https://resources.ovirt.org/pub/yum-repo/ovirt-release-master.rpm

Installs /etc/yum.repos.d/ovirt-master-snapshot.repo with:

[ovirt-master-snapshot]
name=Latest oVirt master nightly snapshot
#baseurl=https://resources.ovirt.org/pub/ovirt-master-snapshot/rpm/fc$releasever/
mirrorlist=https://resources.ovirt.org/pub/yum-repo/mirrorlist-ovirt-master-snapshot-fc$releasever
enabled=1
gpgcheck=0
countme=1
fastestmirror=1

[ovirt-master-snapshot-static]
name=Latest oVirt master additional nightly snapshot
#baseurl=https://resources.ovirt.org/pub/ovirt-master-snapshot-static/rpm/fc$releasever/
mirrorlist=https://resources.ovirt.org/pub/yum-repo/mirrorlist-ovirt-master-snapshot-static-fc$releasever
enabled=1
gpgcheck=0
countme=1
fastestmirror=1

Accessing the mirrorlist returns:

$ curl -i https://resources.ovirt.org/pub/yum-repo/mirrorlist-ovirt-master-snapshot-fc34
HTTP/1.1 200 OK
Date: Sun, 03 Oct 2021 08:51:39 GMT
Server: Apache/2.4.6 (CentOS)
Vary: Accept-Encoding
Connection: close
Transfer-Encoding: chunked
Content-Type: text/plain

# Generated on Sun Oct  3 08:51:39 UTC 2021
# Mirrorlist mirrorlist-ovirt-master-snapshot-fc34 not available, make sure it's in the form mirrorlist-ovirt-${version}-${distribution}.
# And that is one of:

I guess that there are no mirrors since we don't support Fedora now, but this is an issue for developers, since most developers use latest Fedora version.

If we don't build any package for Fedora, we should not install repo files with broken URLs.

Last, returning "200 OK" when we don't have any mirror smells wrong, based on the error message, this should be "404 Not Found".