From ddfbb832fa74f89bf02f320863c2721d614dcbb6 Mon Sep 17 00:00:00 2001
From: glorysr1209-png <glorysr1209@gmail.com>
Date: Fri, 29 May 2026 19:55:48 -0400
Subject: [PATCH] fix(labels): look up repository labels by name

---
 src/github/labels.ts            | 10 ++++++----
 test/unit/github-labels.test.ts |  4 ++--
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/github/labels.ts b/src/github/labels.ts
index c6a75e9fbe..6795ba9042 100644
--- a/src/github/labels.ts
+++ b/src/github/labels.ts
@@ -31,13 +31,15 @@ export async function ensurePullRequestLabel(
 
   let created = false;
   if (options.createMissingLabel) {
-    const repoLabels = await octokit.request("GET /repos/{owner}/{repo}/labels", {
+    const labelLookup = await octokit.request("GET /repos/{owner}/{repo}/labels/{name}", {
       owner,
       repo,
-      per_page: 100,
+      name: labelName,
+    }).catch((error: { status?: number }) => {
+      if (error.status === 404) return null;
+      throw error;
     });
-    const labelExists = (repoLabels.data as GitHubLabel[]).some((label) => label.name?.toLowerCase() === labelName.toLowerCase());
-    if (!labelExists) {
+    if (!labelLookup) {
       await octokit.request("POST /repos/{owner}/{repo}/labels", {
         owner,
         repo,
diff --git a/test/unit/github-labels.test.ts b/test/unit/github-labels.test.ts
index 370e22a156..89fa04c14c 100644
--- a/test/unit/github-labels.test.ts
+++ b/test/unit/github-labels.test.ts
@@ -38,7 +38,7 @@ describe("GitHub PR labels", () => {
       calls.push(`${method} ${url}`);
       if (url.includes("/access_tokens")) return Response.json({ token: "installation-token" });
       if (url.includes("/issues/4/labels") && method === "GET") return Response.json([]);
-      if (url.includes("/repos/JSONbored/gittensory/labels") && method === "GET") return Response.json([{ name: "gittensor" }]);
+      if (url.includes("/labels/gittensor") && method === "GET") return Response.json({ name: "gittensor" });
       if (url.includes("/issues/4/labels") && method === "POST") return Response.json([{ name: "gittensor" }]);
       return new Response("unexpected", { status: 500 });
     });
@@ -59,7 +59,7 @@ describe("GitHub PR labels", () => {
       calls.push(`${method} ${url}`);
       if (url.includes("/access_tokens")) return Response.json({ token: "installation-token" });
       if (url.includes("/issues/4/labels") && method === "GET") return Response.json([]);
-      if (url.includes("/repos/JSONbored/gittensory/labels") && method === "GET") return Response.json([]);
+      if (url.includes("/labels/gittensor") && method === "GET") return new Response("not found", { status: 404 });
       if (url.includes("/repos/JSONbored/gittensory/labels") && method === "POST") {
         const body = JSON.parse(String(init?.body ?? "{}")) as { name?: string; color?: string };
         expect(body).toMatchObject({ name: "gittensor", color: "7ee787" });