class ChefCLI::Policyfile::ComparisonBase::Git

def git_cmd_string
  # Git is a little picky about how we specify the paths, but it looks
  # like we don't need to worry about the relative path to the root of
  # the repo if we give git a leading dot:
  #
  #    git show 6644e6cb2ade90b8aff2ebb44728958fbc939ebf:zero.rb
  #    fatal: Path 'etc/zero.rb' exists, but not 'zero.rb'.
  #    Did you mean '6644e6cb2ade90b8aff2ebb44728958fbc939ebf:etc/zero.rb' aka '6644e6cb2ade90b8aff2ebb44728958fbc939ebf:./zero.rb'?
  #    git show 6644e6cb2ade90b8aff2ebb44728958fbc939ebf:./zero.rb
  #    (works)
  "git show #{ref}:./#{policyfile_lock_relpath}"
end