use fetch-depth, as per advice from Julien

SethTisue · SethTisue · commit daf5e57fc31c · 2021-09-09T17:06:54.000-05:00
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -14,6 +14,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
     - uses: coursier/cache-action@v6
     - uses: actions/setup-java@v2
       with:
