If you are submitting a bug, please include the following:

• summary of problem
  ratchetFrom not working if current project is a git-submodule. if <ratchetFrom>origin/master</ratchetFrom> section is set, nothing happended. But if the <ratchetFrom> is removed, everything works fine.
• gradle or maven version
  maven 3.6.5
• spotless version
  2.6.1
• operating system and version
  Mac

there is no .git dir in git-submodule which is presented in parent module directory. Is It parsing and filter modified files using ./.git directory?