diff --git a/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl.ts b/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl.ts
index ada11f9..553000b 100644
--- a/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl.ts
+++ b/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl.ts
@@ -3541,10 +3541,15 @@
         )
       ) as Promise<ChangeInfo | undefined>;
     } else {
+      const params: FetchParams = {q: `change:${changeNum}`};
+      if (optionsHex) {
+        params['O'] = optionsHex;
+      }
       return this._restApiHelper
         .fetchJSON(
           {
-            url: `/changes/?q=change:${changeNum}`,
+            url: '/changes/',
+            params,
             errFn,
             anonymizedUrl: '/changes/?q=change:*',
           },
diff --git a/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl_test.ts b/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl_test.ts
index 4e33381..78ac93f 100644
--- a/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl_test.ts
+++ b/polygerrit-ui/app/services/gr-rest-api/gr-rest-api-impl_test.ts
@@ -1517,6 +1517,57 @@
     });
   });
 
+  suite('getChange', () => {
+    const changeNum = 555 as NumericChangeId;
+    const repo = 'test-repo' as RepoName;
+
+    test('getChange with known project', async () => {
+      element._projectLookup[changeNum] = Promise.resolve(repo);
+      const promise = mockPromise<ParsedJSON>();
+      const stub = sinon
+        .stub(element._restApiHelper, 'fetchJSON')
+        .returns(promise);
+
+      const change = element.getChange(
+        changeNum,
+        undefined,
+        listChangesOptionsToHex(ListChangesOption.DETAILED_ACCOUNTS)
+      );
+      promise.resolve({...createChange()} as unknown as ParsedJSON);
+
+      await change;
+
+      assert.isTrue(stub.called);
+      assert.equal(stub.args[0][0].url, '/changes/test-repo~555');
+      assert.deepEqual(stub.args[0][0].params, {
+        O: listChangesOptionsToHex(ListChangesOption.DETAILED_ACCOUNTS),
+      });
+    });
+
+    test('getChange with unknown projecgt', async () => {
+      const promise = mockPromise<ParsedJSON>();
+      const stub = sinon
+        .stub(element._restApiHelper, 'fetchJSON')
+        .returns(promise);
+
+      const change = element.getChange(
+        changeNum,
+        undefined,
+        listChangesOptionsToHex(ListChangesOption.DETAILED_ACCOUNTS)
+      );
+      promise.resolve({...createChange()} as unknown as ParsedJSON);
+
+      await change;
+
+      assert.isTrue(stub.called);
+      assert.equal(stub.args[0][0].url, '/changes/');
+      assert.deepEqual(stub.args[0][0].params, {
+        O: listChangesOptionsToHex(ListChangesOption.DETAILED_ACCOUNTS),
+        q: 'change:555',
+      });
+    });
+  });
+
   suite('getChanges populates _projectLookup', () => {
     test('multiple queries', async () => {
       sinon.stub(element._restApiHelper, 'fetchJSON').resolves([