And?
Hyperledger Fabric still uses a consensus mechanism, and I promise you Walmart uses one. You can’t trust China with food safety.
Permission is given out to various suppliers with various levels of trust.
“Permissioned” in the context of Hyperledger Fabric just means all participants are known entities with identities managed by a Membership Service Provider (MSP), which is likely Walmart in this case and have access control governed by policies ensuring that only authorized actors can interact with the network and its resources. It doesn’t mean that a consensus mechanism isn’t used or needed.
Shit, without using GPG and SSH to sign commits and outside identity verification mechanisms, you run the risk of git identity fraud.