$ mount -t none -o bind /mnt/koji/ /var/lib/mock/dist-circle8-build-26021-4552/root/mnt/koji
$ mount -t none -o bind /mnt/koji/compose/8.3.2011/Circle-8-20210621.1 /var/lib/mock/dist-circle8-build-26021-4552/root/mnt/koji/compose/8.3.2011/Circle-8-20210621.1