python pip freeze with a custom link that was used to install a package

Question

I have a .whl package which is hosted in the cloud. I'm able to do

pip install https://somelink.com/package.whl

Which works fine. But when I do

pip freeze > file

I get the package

package==some_version

I would like to get

https://somelink.com/package.whl

How can I get the link to the package instead of the package name?

Thanks