show metadata as step

Author: lobsterkatie

.github/workflows/build.yml

@@ -47,26 +47,29 @@ jobs:
         uses: actions/checkout@v2
         with:
           ref: ${{ env.HEAD_COMMIT }}
-          # fetch-depth: 2
-      - name: Get PR head SHA
-        run: echo "HEAD_SHA=${{ github.event.pull_request.head.sha }}" >> $GITHUB_ENV
+          # We need to check out not only the fake merge commit between the PR and the base branch which GH creates, but
+          # also its parents, so that we can pull the commit message from the head commit of the PR
+          fetch-depth: 2
+      # - name: Get PR head SHA
+      #   run: echo "HEAD_SHA=${{ github.event.pull_request.head.sha }}" >> $GITHUB_ENV
       # - name: Setup tmate session
       #   uses: mxschmitt/action-tmate@v3
-      - name: Get commit message
+      - name: Get metadata
         run: |
+          echo "COMMIT_SHA=${{ github.event.pull_request.head.sha }}" >> $GITHUB_ENV
           echo "COMMIT_MESSAGE=$(git log -n 1 --pretty=format:%s ${{ github.event.pull_request.head.sha }})" >> $GITHUB_ENV
-      - name: "BRANCH: ${{ github.ref_name }}"
+      # - name: "BRANCH: ${{ github.ref_name }}"
+      #   run: echo ""
+      - name: "Current commit: ${{ env.COMMIT_MESSAGE }} (${{ env.COMMIT_MESSAGE }})"
         run: echo ""
-      - name: "COMMIT: ${{ env.COMMIT_MESSAGE }}"
-        run: echo ""
-      - name: "SHA: ${{ github.sha }}"
-        run: echo ""
-      - name: "GITHUB_HEAD_REF: ${{env.GITHUB_HEAD_REF}}"
-        run: echo ""
-      - name: Print env
-        run: env | sort
-      - name: Read variable
-        run: echo "COMMIT_MESSAGE is ${{ env.COMMIT_MESSAGE }}"
+      # - name: "SHA: ${{ github.sha }}"
+      #   run: echo ""
+      # - name: "GITHUB_HEAD_REF: ${{env.GITHUB_HEAD_REF}}"
+      #   run: echo ""
+      # - name: Print env
+      #   run: env | sort
+      # - name: Read variable
+      #   run: echo "COMMIT_MESSAGE is ${{ env.COMMIT_MESSAGE }}"
 
       - name: Set up Node
         uses: actions/setup-node@v1