ci(docs): Set documentation to build from previous commit SHA.

.github/workflows/semantic-release.yml

@@ -5,8 +5,10 @@ on:
       - main
 
 jobs:
-  semantic-release:
+  semantic_release:
     runs-on: ubuntu-latest
+    outputs:
+      new_sha: ${{ steps.sha.outputs.SHA }}
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
@@ -17,10 +19,16 @@ jobs:
       - run: npx semantic-release
         env:
           GITHUB_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
+      - name: get sha
+        id: sha
+        run: |
+          sha_new=$(git rev-parse HEAD)
+          echo $sha_new
+          echo "::set-output name=SHA::$sha_new"
 
   documentation:
     runs-on: ubuntu-latest
-    needs: ['semantic-release']
+    needs: ['semantic_release']
     steps:
       - uses: actions/setup-python@v2
         with:
@@ -29,7 +37,8 @@ jobs:
       # Checkout the main branch to /main
       - uses: actions/checkout@v2
         with:
-          path: main
+          ref: ${{ needs.semantic_release.outputs.new_sha }}
+          fetch-depth: 0
 
       # Checkout the GitHub pages branch to /gh-pages
       - uses: actions/checkout@v2