fix build version

Author: jogibear9988

.github/workflows/dotnet.yml

@@ -13,6 +13,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    - name: Fetch history
+      run: git fetch --prune --unshallow
     - name: Setup .NET
       uses: actions/setup-dotnet@v1
       with: