I've been using git for years, and can't find documentation for start.
https://gitexercises.fracz.com/exercise/master https://git-scm.com/docs
It looks like the remote bare repo has a botched HEAD.
Workaround:
cd exercises git checkout master ./configure.sh git start
So the guy teaching us git has a messed-up git repo...?
(╯°□°)╯︵ ┻━┻
> And the git start?
> That is the first alias configured by the script described above. It initializes the first exercise that is on master branch. Read the instructions and solve it!