Git pull show all files are modified and with a lot conflicts

  1. Change line ending config 
    git config core.autocrlf true
  2. Change file mode: 
    // Check current status
git config core.filemode

// Current folder
git config core.filemode false

// System level
git config --system core.filemode false

// Global
git config --global core.filemode false
  3. Clear cache 
    git rm --cached -r .

Reference:

  1. elharony commented on 7 Dec 2018
    https://github.com/microsoft/WSL/issues/184
  2. https://github.com/microsoft/WSL/issues/2900