With JJ you can even override the ref spec of what should be considered a mutable commit. Feel free to set it to all commits and JJ will not allow you to mutate

With JJ you can even override the ref spec of what should be considered a mutable commit. Feel free to set it to all commits and JJ will not allow you to mutate anything unless you pass the --ignore-mutable flag. For example, I've configured it for me to make any commit by anyone else mutable regardless of branch: [revset-aliases] # To always consider changes by others immutable: "immutable_heads()" = "builtin_immutable_heads() | (trunk().. & ~mine())"