hatch build adds unexpected files to sdist - pkgname.tar.gz

[cagledw]

When I use the command line: "hatch build", it adds additional files to the package's ./dist/<pkgname>.tar.gz. I don't think the sdist needs these files and would like to exclude them. When I perform the same function using "py -m build", the undesired files aren't included. Why are these files included by hatch and what can I do to exclude them?

The unexpected/undesired files are installed as shown below:

pkg_name
├── src
│   └──  pkg_name
├── LICENSE.txt
├── README.md
└── pyproject.toml
.-<below added by hatch build 
     note underscores changes to hyphen in pkg_name>
└── pkg-name
     └── V-eIBPIA
           └──  pkg-name-build
                ├── Lib
                └── Scripts

The Lib & Scripts directories added by hatch contain the build env packages:
hatchling, packaging, pathspec, pip, pluggy, setuptools, ... I'm guessing I don't have something configured correctly but can't figure out what.

The entire subdirectory <pkg-name> created by hatch is then included in the sdist file <pkg-name>.tar.gz