[Hotfix] Correct the script (#60)

* Correct the git merge command

* Add GITHUB_TOKEN to env

* Make the script executable

* Delete the comment

.github/script/merge-branch.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # Make sure this file is executable
-# chmod +x .github/script/merge-branch.sh
+# chmod a+x .github/script/merge-branch.sh
 
 # USAGE: This script is used to merge a branch into another branch
 
@@ -11,11 +11,11 @@ git config user.name github-actions
 git config user.email github-actions@github.com
 
 # Merge branch
-echo "If branch $branch2 exists, merge branch origin $branch1 into branch $branch2"
+echo "If branch $branch2 exists, merge branch $branch1 into branch $branch2"
 if git show-ref --quiet refs/heads/$branch2
 then
   git checkout $branch2
-  git merge origin $branch1
+  git merge $branch1
   git push origin $branch2
 else
   echo "Branch $branch2 does not exist"

.github/workflows/4-add-branch-protections.yml

@@ -56,13 +56,13 @@ jobs:
           fetch-depth: 0 # Let's get all the branches.
           ref: ci # Important, as normally `branch_protection_rule` event won't grab other branches
 
-      - name: Merge changes from origin main into ci
+      - name: Merge changes from origin/main into ci
         run: ./.github/script/merge-branch.sh
         env:
-          branch1: main
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          branch1: origin/main
           branch2: ci
 
-      # TODO: figure out a better way to deal with the merge conflict.
       # In README.md, switch step 4 for step 5.
       - name: Update to step 5
         uses: skills/action-update-step@v2