Adjust Build.yml workflow to use rebase again. (#10923)

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

.github/workflows/Build.yml

@@ -157,20 +157,17 @@ jobs:
         run: exit 1
       - name: Report update & build success
         run: echo "Update & build jobs succeeded. Creating a PR."
-      - uses: actions/checkout@v4
-        with:
-          clean: false
-          persist-credentials: true
-          ref: ${{ github.ref_name }}
-      - name: Merge Master
+      - name: Rebase to Master
         run: |
+           git init --ref-format=reftable
+           git remote add origin https://github.com/chromebrew/chromebrew
+           git fetch --all
+           git checkout -f master
            git config user.name "${{ github.actor }}"
            git config user.email "${{ github.actor }}@users.noreply.github.com"
-           git fetch --shallow-since="1 week"
-           git pull origin master
-           git pull origin ${{ github.ref_name }}
-           git merge origin master
-           git commit -m "Merge master into ${{ github.ref_name }}." || true
+           git pull
+           git checkout ${{ github.ref_name }} && git rebase master
+           # git commit -m "Merge master into ${{ github.ref_name }}." || true
       - name: Push rebase
         uses: ad-m/github-push-action@master
         with: