fix: use v2 branch to run mondern.js cases (#127)

Author: Timeless0911

cases/modernjs-framework/app-ssg/package.json

@@ -12,8 +12,8 @@
   "dependencies": {
     "@modern-js/runtime": "workspace:*",
     "@modern-js/plugin-ssg": "workspace:*",
-    "react": "^19",
-    "react-dom": "^19"
+    "react": "^18",
+    "react-dom": "^18"
   },
   "devDependencies": {
     "@modern-js/app-tools": "workspace:*",
@@ -23,8 +23,8 @@
     "prettier": "^2.6.2",
     "husky": "4.3.8",
     "typescript": "^5",
-    "@types/react": "^19",
-    "@types/react-dom": "^19",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
     "@types/node": "^14"
   }
 }

scripts/src/shared/git.ts

@@ -26,7 +26,7 @@ export async function cloneRepo(productName: string, caseName: string) {
 
     const options = ['clone'];
 
-    if (!COMMIT_ID && !PR_NUMBER) {
+    if (!COMMIT_ID && !PR_NUMBER && repoName !== 'modern.js') {
       options.push('--single-branch');
       options.push('--depth', '1');
     }
@@ -37,6 +37,19 @@ export async function cloneRepo(productName: string, caseName: string) {
       stdout: 'inherit',
     });
 
+    if (repoName === 'modern.js') {
+      await execa('git', ['fetch', 'origin', 'v2'], {
+        cwd: localRepoPath,
+        stderr: 'inherit',
+        stdout: 'inherit',
+      });
+      await execa('git', ['checkout', 'v2'], {
+        cwd: localRepoPath,
+        stderr: 'inherit',
+        stdout: 'inherit',
+      });
+    }
+
     if (COMMIT_ID) {
       await execa('git', ['checkout', COMMIT_ID], {
         cwd: localRepoPath,