Branch name conflicts with existing directory name

[Paul2708]

Description

If there exists a directory with the same name as a branch, switching to this branch fails.
The following error message is shown:

Failed to switch branch: fatal: ambiguous argument 'b': both revision and filename Use '--' to separate paths from revisions, like this: 'git [...] -- [...]'

Reproduce

1. Initialize a new repository and create an initial commit (e.g., creating a README file).
2. Create a new branch "test". Now, switching branches works as expected.
3. Switch into branch "main" and create a new directory called "test".
4. Now, switching back to the branch "test" results in the error above.

Expected behavior

Due to the error, the branch could not be switched.
Thus, the expected behavior is that switching branches works even if there is a directory with the same name.

Context

• Python package version: 0.50.0

• Extension version: @jupyterlab/git v0.50.0 enabled OK (python, jupyterlab-git)

• Git version: 2.42.0

• Operating System and its version: Ubuntu 20.04 (WSL)

Command Line Output

[D 2024-02-28 20:40:06.211 ServerApp.jupyterlab_git] Execute ['git', 'diff', 'main', 'test', '--name-only', '-z'] in /home/paul/cammp/del-me-git-extension-test/myrepo.
[D 2024-02-28 20:40:06.216 ServerApp.jupyterlab_git] Code: 128
    Output:
    Error: fatal: ambiguous argument 'test': both revision and filename
    Use '--' to separate paths from revisions, like this:
    'git  [...] -- [...]'
[E 2024-02-28 20:40:06.217 ServerApp] {

"Host": "localhost:8888",

"Accept": "/",

"Referer": "http://localhost:8888/lab/tree/myrepo/Untitled.ipynb",

"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 OPR/107.0.0.0"

}

[E 2024-02-28 20:40:06.217 ServerApp] 500 POST /git/myrepo/changed_files?1709149206166 (7db4901c31a141f884dfee37ae6f7412@127.0.0.1) 48.59ms referer=http://localhost:8888/lab/tree/myrepo/Untitled.ipynb

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