test: share bare repository across print workflows

.gitea/workflows/print2.yml

@@ -6,14 +6,58 @@ on:
     types:
       - completed
 
+concurrency:
+  group: print2-${{ github.repository }}
+  cancel-in-progress: false
+
+env:
+  WORKSPACE_ROOT: "/data/workspace"
+
 jobs:
   print:
     runs-on: standard-ubuntu-22
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     steps:
+      - name: 将 Print Two Worktree 对齐到上游提交
+        run: |
+          set -euo pipefail
+
+          REPO_NAME="${{ github.event.repository.name }}"
+          HEAD_SHA="${{ github.event.workflow_run.head_sha }}"
+          WORKTREE_DIR="${WORKSPACE_ROOT}/${REPO_NAME}/worktrees/print2"
+
+          case "$HEAD_SHA" in
+            ''|*[!0-9a-fA-F]*)
+              echo "无效的上游提交 SHA: $HEAD_SHA" >&2
+              exit 1
+              ;;
+          esac
+          if [ ! -f "$WORKTREE_DIR/.git" ]; then
+            echo "Prepare 未创建 Print Two Worktree: $WORKTREE_DIR" >&2
+            exit 1
+          fi
+          if ! git -C "$WORKTREE_DIR" cat-file -e "${HEAD_SHA}^{commit}"; then
+            echo "Worktree 共享仓库中不存在上游提交: $HEAD_SHA" >&2
+            exit 1
+          fi
+
+          git -C "$WORKTREE_DIR" checkout --detach --force "$HEAD_SHA"
+          git -C "$WORKTREE_DIR" reset --hard "$HEAD_SHA"
+          git -C "$WORKTREE_DIR" clean -ffdx
+
+          ACTUAL_SHA=$(git -C "$WORKTREE_DIR" rev-parse HEAD)
+          if [ "$ACTUAL_SHA" != "$HEAD_SHA" ]; then
+            echo "Worktree 提交不匹配: 期望 $HEAD_SHA，实际 $ACTUAL_SHA" >&2
+            exit 1
+          fi
+
+          echo "Print Two 使用仓库: $WORKTREE_DIR"
+          git -C "$WORKTREE_DIR" log -1 --oneline
+
       - name: 每 10 秒打印一次数字
         run: |
-          echo "[$(date '+%F %T')] Print Two 启动 (上游 Prepare 结论: ${{ github.event.workflow_run.conclusion }})"
+          WORKTREE_DIR="${WORKSPACE_ROOT}/${{ github.event.repository.name }}/worktrees/print2"
+          echo "[$(date '+%F %T')] Print Two 启动 (仓库提交: $(git -C "$WORKTREE_DIR" rev-parse --short HEAD))"
           for i in $(seq 1 5); do
             echo "[$(date '+%F %T')] Print Two -> $i"
             sleep 10