We initialize Jujutsu for our repository for use with a bare Git repo.
```(stderr)
$ jj git init --git-repo heartwood heartwood.jj
Initialized repo in "heartwood.jj"
Hint: Running `git clean -xdf` will remove `.jj/`!
```
```
$ cd heartwood.jj
```
```
$ rad .
rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji
```