$ mount -t none -o bind /mnt/koji/ /var/lib/mock/f42-build-59183162-6571572/root/mnt/koji
$ mount -t none -o bind /mnt/koji/compose/updates/Fedora-42-updates-testing-20250429.0 /var/lib/mock/f42-build-59183162-6571572/root/mnt/koji/compose/updates/Fedora-42-updates-testing-20250429.0