$ mount -t none -o bind /mnt/koji/ /var/lib/mock/dist-circle8-build-38472-6897/root/mnt/koji
$ mount -t none -o bind /mnt/koji/compose/8/Circle-8-20210801.0 /var/lib/mock/dist-circle8-build-38472-6897/root/mnt/koji/compose/8/Circle-8-20210801.0