Let's look at how patch updates work.

Alice creates a project and Bob clones it.

``` ~alice
$ rad init --name heartwood --description "radicle heartwood protocol & stack" --no-confirm --public

Initializing public radicle 👾 project in .

✓ Project heartwood created.

Your project's Repository ID (RID) is rad:zhbMU4DUXrzB8xT6qAJh6yZ7bFMK.
You can show it any time by running `rad .` from this directory.

✓ Project successfully announced.

Your project has been announced to the network and is now discoverable by peers.
To push changes, run `git push`.
```

``` ~bob
$ rad clone rad:zhbMU4DUXrzB8xT6qAJh6yZ7bFMK
✓ Tracking relationship established for rad:zhbMU4DUXrzB8xT6qAJh6yZ7bFMK with scope 'all'
✓ Fetching rad:zhbMU4DUXrzB8xT6qAJh6yZ7bFMK from z6MknSL…StBU8Vi..
✓ Forking under z6Mkt67…v4N1tRk..
✓ Creating checkout in ./heartwood..
✓ Remote alice@z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi added
✓ Remote-tracking branch alice@z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi/master created for z6MknSL…StBU8Vi
✓ Repository successfully cloned under [..]/heartwood/
╭────────────────────────────────────╮
│ heartwood                          │
│ radicle heartwood protocol & stack │
│ 0 issues · 0 patches               │
╰────────────────────────────────────╯
Run `cd ./heartwood` to go to the project directory.
```

We wait for Alice to sync our fork.

``` ~bob
$ rad node events -n 1 --timeout 1
{"type":"refsSynced","remote":"z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi","rid":"rad:zhbMU4DUXrzB8xT6qAJh6yZ7bFMK"}
```

Bob then opens a patch.

``` ~bob (stderr)
$ cd heartwood
$ git checkout -b bob/feature -q
$ git commit --allow-empty -m "Bob's commit #1" -q
$ git push rad -o sync -o patch.message="Bob's patch" HEAD:refs/patches
✓ Patch a84ea2e8626a86442910a2e70837561538c20efb opened
✓ Synced with 1 node(s)
To rad://zhbMU4DUXrzB8xT6qAJh6yZ7bFMK/z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk
 * [new reference]   HEAD -> refs/patches
```
``` ~bob
$ git status --short --branch
## bob/feature...rad/patches/a84ea2e8626a86442910a2e70837561538c20efb
```

Alice checks it out.

``` ~alice
$ rad patch checkout a84ea2e
✓ Switched to branch patch/a84ea2e
✓ Branch patch/a84ea2e setup to track rad/patches/a84ea2e8626a86442910a2e70837561538c20efb
$ git show
commit bdcdb30b3c0f513620dd0f1c24ff8f4f71de956b
Author: radicle <radicle@localhost>
Date:   Thu Dec 15 17:28:04 2022 +0000

    Bob's commit #1
```

Bob then updates the patch.

``` ~bob (stderr)
$ git commit --allow-empty -m "Bob's commit #2" -q
$ git push rad -o sync -o patch.message="Updated."
✓ Patch a84ea2e updated to 9fd6bb156bc899aef7119e6d97c6cf850639a7df
✓ Synced with 1 node(s)
To rad://zhbMU4DUXrzB8xT6qAJh6yZ7bFMK/z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk
   bdcdb30..cad2666  bob/feature -> patches/a84ea2e8626a86442910a2e70837561538c20efb
```

Alice pulls the update.

``` ~alice
$ rad patch show a84ea2e
╭─────────────────────────────────────────────────────────────────────╮
│ Title    Bob's patch                                                │
│ Patch    a84ea2e8626a86442910a2e70837561538c20efb                   │
│ Author   bob z6Mkt67…v4N1tRk                                        │
│ Head     cad2666a8a2250e4dee175ed5044be2c251ff08b                   │
│ Commits  ahead 2, behind 0                                          │
│ Status   open                                                       │
├─────────────────────────────────────────────────────────────────────┤
│ cad2666 Bob's commit #2                                             │
│ bdcdb30 Bob's commit #1                                             │
├─────────────────────────────────────────────────────────────────────┤
│ ● opened by bob z6Mkt67…v4N1tRk now                                 │
│ ↑ updated to 9fd6bb156bc899aef7119e6d97c6cf850639a7df (cad2666) now │
╰─────────────────────────────────────────────────────────────────────╯
$ git ls-remote rad
f2de534b5e81d7c6e2dcaf58c3dd91573c0a0354	refs/heads/master
cad2666a8a2250e4dee175ed5044be2c251ff08b	refs/heads/patches/a84ea2e8626a86442910a2e70837561538c20efb
```
``` ~alice
$ git fetch rad
$ git status --short --branch
## patch/a84ea2e...rad/patches/a84ea2e8626a86442910a2e70837561538c20efb [behind 1]
```
``` ~alice
$ git pull
Updating bdcdb30..cad2666
Fast-forward
```
``` ~alice
$ git show
commit cad2666a8a2250e4dee175ed5044be2c251ff08b
Author: radicle <radicle@localhost>
Date:   Thu Dec 15 17:28:04 2022 +0000

    Bob's commit #2
```