2021-12-28 14:21:57,155 [INFO] {2931844} koji.build.buildroot:543 Running mock as kojibuilder
INFO: mock.py version 2.12 starting (python version = 3.6.8, NVR = mock-2.12-1.el8)...
INFO: Using 'dnf' instead of 'yum' for bootstrap chroot
Start(bootstrap): init plugins
INFO: selinux disabled
Finish(bootstrap): init plugins
Start: init plugins
INFO: selinux disabled
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: 2.12
INFO: Mock Version: 2.12
Start(bootstrap): dnf install
ERROR: Command failed: 
 # /usr/bin/dnf --installroot /var/lib/mock/dist-an7-extend-build-63879-36030-bootstrap/root/ --setopt=deltarpm=False --allowerasing --disableplugin=local --disableplugin=spacewalk --disableplugin=versionlock install yum yum-utils
Unable to detect release version (use '--releasever' to specify release version)
No matches found for the following disable plugin patterns: local, versionlock
No match for argument: yum
No match for argument: yum-utils
Error: Unable to find a match: yum yum-utils