2026-02-16 17:18:09,942 [INFO] {3091371} koji.build.buildroot:509 Running mock as kojibuilder
INFO: mock.py version 6.3 starting (python version = 3.9.25, NVR = mock-6.3-1.el9), args: /usr/libexec/mock/mock -r koji/v9.0-incoming-10465-29032 --init
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
Mock Version: 6.3
INFO: Mock Version: 6.3
Start(bootstrap): chroot init
INFO: calling preinit hooks
INFO: Using 'dnf4' instead of 'yum' for bootstrap chroot
INFO: Package manager dnf4 detected and used (fallback)
Start(bootstrap): installing yum tooling
ERROR: Command failed: 
 # /usr/bin/dnf-3 --installroot /var/lib/mock/v9.0-incoming-10465-29032-bootstrap/root/ --setopt=deltarpm=False --setopt=allow_vendor_change=yes --allowerasing --disableplugin=local --disableplugin=spacewalk --disableplugin=versionlock install yum yum-utils --setopt=tsflags=nocontexts
Unable to detect release version (use '--releasever' to specify release version)
No matches found for the following disable plugin patterns: local, spacewalk, versionlock
No match for argument: yum
No match for argument: yum-utils
Error: Unable to find a match: yum yum-utils