Overview

After the BigSur 11.2 upgrade git stopped working. This is the same problem I had upgrading from 10.14.x to 10.15.x in the past.

Details

git stopped working after the BigSur 11.2 upgrade:

jemurray@jasons-mbp:~/Documents/www-personal/current/jasonmurray.org $ git status
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

Fix the problem by running the xcode command line tool install:

jemurray@jasons-mbp:~/Documents/www-personal/current/jasonmurray.org $ xcode-select --install
xcode-select: note: install requested for command line developer tools

The command above starts the GUI install:

3+ hours over a 1Gbp/s link:

It only took about 5 minutes to install:

Git is working again:

jemurray@jasons-mbp:~/Documents/www-personal/current/jasonmurray.org $ git status
On branch master
Changes not staged for commit:
  (use "git add/rm <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   content/now.md