Mani init fails when CWD is a git repository

[mrjk]

• [ ] I have the latest version of mani
• [x] I have searched through the existing issues

Info

• OS

  • [x] Linux
  • [ ] Mac OS X
  • [ ] Windows
  • [ ] other

• Shell

  • [x] Bash
  • [ ] Zsh
  • [ ] Fish
  • [ ] Powershell
  • [ ] other

• Version:

Version: 0.23.0    
Commit: 83b2ffb   
Date: 2022-12-31T11:24:08Z

Problem / Steps to reproduce

Let's assume test_dir is a dir with a lots of git repos. Let's assume we want test_dir to be a git repository itself, with a nice README.md explaining how to checkout included repos:

cd test_dir
git init .
mani init
error: exit status 1

You can't init many, it returns an error.

Workaround: Move temporarly the .git folder to TMP_GIT, do the mani init and rename TMP_GIT to .git again.