If we have fetched a project, then we do not have a fork of the
repository in the storage, i.e. there is no ref hierarchy for our
NID. This is demonstrated below where our NID is
`z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk`:

```
$ rad inspect rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji --refs
.
`-- z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi
    `-- refs
        |-- heads
        |   `-- master
        `-- rad
            |-- id
            `-- sigrefs
```

To remedy this, we can use the `rad fork` command for the project we
wish to fork:

```
$ rad fork rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji
✓ Forked project rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji for z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk
```

Now, if we `rad inspect` the project's refs again we will see that we
have a copy of the main set of refs:

```
$ rad inspect rad:z42hL2jL4XNk6K8oHQaSWfMgCL7ji --refs
.
|-- z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi
|   `-- refs
|       |-- heads
|       |   `-- master
|       `-- rad
|           |-- id
|           `-- sigrefs
`-- z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk
    `-- refs
        |-- heads
        |   `-- master
        `-- rad
            |-- id
            `-- sigrefs
```

We are now able to setup a remote in our own working copy of the
project and push to our own fork.