$ mount -t none -o bind /mnt/koji/ /var/lib/mock/f42-build-59126864-6571252/root/mnt/koji
$ mount -t none -o bind /mnt/koji/compose/updates/Fedora-42-updates-testing-20250427.0 /var/lib/mock/f42-build-59126864-6571252/root/mnt/koji/compose/updates/Fedora-42-updates-testing-20250427.0