I wanted to upgrade my git-history installation to a new alpha version.
pipx upgrade git-history doesn't work for that, because it upgrades to the most recent stable version - but I wanted the alpha.
This recipe did what I wanted:
pipx inject git-history git-history==0.7a0
pipx inject provides a way to manipulate the packages installed in a specific pipx managed virtual environment.
The above command runs the equivalent of pip install git-history==0.7a0 inside the virtual environment that pipx is already managing for git-history.
I confirmed that it worked like this:
~ % git-history --version
git-history, version 0.7a0