Installing oemof_visio under windows

The installation with: “pip install git+” did not work. Do I have to write anything different?
I get the following error:
Error [WinError 2] Das System kann die angegebene Datei nicht finden while executing command git clone -q C:\Users\nagel\AppData\Local\Temp\pip-rkdz0ake-build
Cannot find command ‘git’

The program git has to be installed. See for example.