root/pypi: links for signfetch

root/pypi signfetch-0.2.0a1.tar.gz
root/pypi signfetch-0.2.0a1-py3-none-any.whl
root/pypi signfetch-0.1.1a1.tar.gz
root/pypi signfetch-0.1.1a1-py3-none-any.whl