2021-06-08 16:44:16,260 [INFO] {233659} koji.build.buildroot:540 Running mock as kojibuilder
ERROR: Option --old-chroot has been deprecated. Use --isolation=simple instead.
INFO: mock.py version 2.9 starting (python version = 3.6.8, NVR = mock-2.9-1.el8)...
Start(bootstrap): init plugins
INFO: selinux enabled
Finish(bootstrap): init plugins
Start: init plugins
INFO: selinux enabled
Finish: init plugins
INFO: Signal handler active
Start: run
Start: clean chroot
Finish: clean chroot
Start(bootstrap): chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 2.9
INFO: Mock Version: 2.9
Start(bootstrap): dnf install
ERROR: Command failed: 
 # /usr/bin/dnf --installroot /var/lib/mock/dist-circle8-build-21948-4052-bootstrap/root/ --setopt=deltarpm=False --allowerasing --disableplugin=local --disableplugin=spacewalk install dnf dnf-plugins-core --setopt=tsflags=nocontexts
Unable to detect release version (use '--releasever' to specify release version)
No matches found for the following disable plugin patterns: local
Errors during downloading metadata for repository 'build':
  - Status code: 404 for https://koji.cclinux.org/kojifiles/repos/dist-circle8-build/4052/i386/repodata/repomd.xml (IP: 192.168.0.225)
Error: Failed to download metadata for repo 'build': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried