The reason of that koji not in pypi is the dependency python module "rpm-python" is not in pypi.
And there is a reason that RPM project does not manage "rpm-python" in pypi .
Now I am working for the installer to install rpm-python from pypi with high priority.
I was success to remove rpm-devel dependency from the installer.
But I have to remove one more devel dependency from the installer before the new version release of the installer.
After that, koji can use the installer and download rpm-python from pypi.