Update test-build.yml

adding fetch

.github/workflows/test-build.yml

@@ -51,6 +51,7 @@ jobs:
               conda update conda
               conda install -n base conda-libmamba-solver
               conda install python=3.10 conda-build colorama pip ruamel ruamel.yaml rich jsonschema -c conda-forge
+              git fetch --prune --unshallow --tags
               pip install -e .
 
 # echo yes before login to prevent anaconda bug breaking automation