How to fix error :xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun after update to MacOS Mojave ?

Solution for

• Git
• macOS Mojave 10.14.x

STORY:
Did you upgrade your amazing macOS Mojave? Did you wish to crack on your project and start to use git but you were hit with error: 

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

SOLUTION:
You need to install Command Line Developer Tools, so simply run this command:

xcode-select --install