fix(show-refs): skip remote-tracking refs without a configured remote

src/screen/show_refs.rs

@@ -38,9 +38,13 @@ fn create_remotes_sections<'a>(repo: &'a Repository) -> Res<impl Iterator<Item =
     let all_remotes = create_reference_items(repo, Reference::is_remote)?;
     let mut remotes = BTreeMap::new();
     for (name, remote) in all_remotes {
-        let name =
-            String::from_utf8_lossy(&repo.branch_remote_name(&name).map_err(Error::GetRemote)?)
-                .to_string();
+        // A remote-tracking ref can exist without a configured remote (for
+        // example a leftover ref from a conflicted rebase). Skip those instead
+        // of failing the whole screen.
+        let Ok(remote_name) = repo.branch_remote_name(&name) else {
+            continue;
+        };
+        let name = String::from_utf8_lossy(&remote_name).to_string();
 
         match remotes.entry(name) {
             Entry::Vacant(entry) => {

src/tests/mod.rs

@@ -359,6 +359,21 @@ mod show_refs {
         run(&ctx.dir, &["git", "tag", "v1.0"]);
         snapshot!(ctx, "Yjjjjjjbb<enter>Y");
     }
+
+    #[test]
+    fn show_refs_with_remote_tracking_ref_without_remote() {
+        let ctx = setup_clone!();
+        run(
+            &ctx.dir,
+            &[
+                "git",
+                "update-ref",
+                "refs/remotes/conflict-upstream/main",
+                "HEAD",
+            ],
+        );
+        snapshot!(ctx, "Y");
+    }
 }
 
 #[test]

src/tests/snapshots/gitu__tests__show_refs__show_refs_with_remote_tracking_ref_without_remote.snap

@@ -0,0 +1,25 @@
+---
+source: src/tests/mod.rs
+expression: ctx.redact_buffer()
+---
+▌Branches                                                                       |
+▌* main                                                                         |
+                                                                                |
+ Remote origin                                                                  |
+   origin/HEAD                                                                  |
+   origin/main                                                                  |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+                                                                                |
+styles_hash: 23e139cddc801205