If you don’t have Xcode installed on your system, you may see an error similar to the following when trying to run git, particularly on Mac OS.

myComputer>git
xcrun: error: unable to load libxcrun (dlopen(/Library/Developer/CommandLineTools/usr/lib/libxcrun.dylib, 0x0005): tried: '/Library/Developer/CommandLineTools/usr/lib/libxcrun.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need '')), '/System/Volumes/Preboot/Cryptexes/OS/Library/Developer/CommandLineTools/usr/lib/libxcrun.dylib' (no such file), '/Library/Developer/CommandLineTools/usr/lib/libxcrun.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need ''))).
To fix, download Xcode from the App Store