cli: fix update hint

The hint for updating a patch incorrectly printed:

    git push rad -f HEAD:rad/patches/<patch id>

The remote, `rad`, is already specified so the the right hand side of
the refspec should only be `patches/<patch id>`.

Fix this by stripping the remote from the name of the branch in the
remote helper.

Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
X-Clacks-Overhead: GNU Terry Pratchett

radicle-cli/examples/rad-patch-via-push.md

@@ -10,7 +10,7 @@ $ git commit -a -m "Add things" -q --allow-empty
 $ git push -o patch.message="Add things #1" -o patch.message="See commits for details." rad HEAD:refs/patches
 ✓ Patch 82faae29b2a2f11bf45bbba4c4787d6b32a12447 opened
 hint: to update, run `git push`,
-      or `git push rad -f HEAD:rad/patches/82faae29b2a2f11bf45bbba4c4787d6b32a12447`
+      or `git push rad -f HEAD:patches/82faae29b2a2f11bf45bbba4c4787d6b32a12447`
 hint: offline push, your node is not running
       to sync with the network, run `rad node start`
 To rad://z42hL2jL4XNk6K8oHQaSWfMgCL7ji/z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi
@@ -112,7 +112,7 @@ $ git commit -a -m "Improve code" -q --allow-empty
 ```
 
 ``` (stderr)
-$ git push
+$ git push rad
 ✓ Patch b77b2e8 updated to 8d6692ce2b2219a54d09ccd5feefedb2bae33eba
 To rad://z42hL2jL4XNk6K8oHQaSWfMgCL7ji/z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi
    8b0ea80..02bef3f  feature/2 -> patches/b77b2e8a05adcdc859a0184f7db859df1c6686b6

radicle-remote-helper/src/push.rs

@@ -394,6 +394,9 @@ fn patch_open<G: Signer>(
             {
                 if let Some(name) = branch.name()? {
                     if profile.hints() {
+                        // Remove the remote portion of the name, i.e.
+                        // rad/patches/deadbeef -> patches/deadbeef
+                        let name = name.split('/').skip(1).collect::<Vec<_>>().join("/");
                         eprintln!("hint: to update, run `git push`,");
                         eprintln!("      or `git push rad -f HEAD:{name}`");
                     }