After upgrading the MAC system, using git clone and other related commands on the terminal fails with an error

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

Troubleshooting

1. Check whether git has been installed

# command
which git

# outcome
/usr/local/bin/git

Description git has been installed

2. View git help information

git --help

Error reporting is the same as above:

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

to sum up, GIT has been installed, but the GIT command cannot be used normally. It may be that the GIT installation package is damaged, so reinstall git

3. Reinstall Git

brew install git

The following error messages appear during installation:

Error: The following formula:
  git
cannot be installed as a binary package and must be built from source.
Install the Command Line Tools:
  xcode-select --install

Error: Git must be installed and in your PATH!
Error: The following formula:
  git
cannot be installed as a binary package and must be built from source.
Install the Command Line Tools:
  xcode-select --install

according to the prompt, you need to reinstall xcode-select

Solution: install xcode-select

To sum up, we need to reinstall xcode-select and execute the following commands on the terminal

 xcode-select --install

After installation, perform the following:

git --help

The correct output of information indicates that git has returned to normal and can be used