Unable to add new files with unicode text in their names

[jy]

Edmagit fails when adding a new file with unicode text in the name.

If the file already exists in the repo, or is added via another tool, I can stage and commit just fine.

Only see an issue if adding a new file.

Reproduce:

• $ cd ~
• $ mkdir testproject
• $ cd testproject
• $ git init .
• $ touch «hi».txt
• $ touch file🔥.txt
• $ code .
• Add new file with edmagit

Fails with:
[128] git add -A -- XXXXX/"file\360\237\224\245.txt"
fatal: pathspec 'XXXXX"file\360\237\224\245.txt"' did not match any files