So that the question is not open and unanswered. First, the distribution of Kali linux comes installed by default git now if any distribution based on debian does not have installed the simplest would be to apply the commands
apt-get update
apt-get install git
How to know if I have git installed in both Ubuntu and Kali Linux.
The simplest thing would be to verify the version of git if you have installed it will result in the version if it will not give you a message that does not have installed git
(although there may be many more options)
git --version
In Distributions based on Debian, you can see the list of installed packages by means of the command dpkg -l | grep **paquete** in this case it would be dpkg -l | grep git
Check that your distribution does not already come with git installed. Many distributions focused on development already come with it. To check it open a new shell and write the following:
git --version
If you get an error you can install it in Ubuntu with the following command
apt-get update && apt-get install git
For more information on installation and ways of employment you can follow this guide