Hi everyone I am getting started with Nav2 in Ros2 so after installing the nav2 I was trying to build the package..

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Hi everyone I am getting started with Nav2 in Ros2 so after installing the nav2 I was trying to build the package with this code

git clone https://github.com/ros-planning/navigation2.git --branch <ros2-distro>-devel

If you don't know what I am talking about check this page of nav2 Installation:

• https://navigation.ros.org/build_inst...

when I execute the command above its give me the following error :

ahmad@DESKTOP-QA1ALF1:~/nav2_ws/src$ git clone
https://github.com/ros-planning/navigation2.git --branch galactic-devel 
Cloning into 'navigation2'... fatal: Remote branch
galactic-devel not found in upstream origin
ahmad@DESKTOP-QA1ALF1:~/nav2_ws/src$

Anyone know what should I do ?