ci: Fetch all history for all tags and branches

Signed-off-by: John Andersen <[email protected]>

Author: pdxjohnny

.github/workflows/testing.yml

@@ -15,9 +15,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Fetch rest of repo
+    - name: Checkout full upstream repo
       run: |
-        git fetch --all
+        git remote set-url origin https://github.com/intel/dffml
+        git fetch --prune --unshallow
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v1
       with:
@@ -45,9 +46,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Fetch rest of repo
+    - name: Checkout full upstream repo
       run: |
-        git fetch --all
+        git remote set-url origin https://github.com/intel/dffml
+        git fetch --prune --unshallow
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v1
       with: