Conflict with untracked causes CalledProcessError

[tucked]

$ git switch backups
error: The following untracked working tree files would be overwritten by checkout:
        backup.sh
Please move or remove them before you switch branches.
Aborting
Traceback (most recent call last):
  File "/ifs/home/dtucker/.local/bin/git-rebase-branches", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/ifs/home/dtucker/.local/pipx/venvs/git-rebase-branches/lib/python3.12/site-packages/git_rebase_branches.py", line 152, in main
    run(["git", "switch", branch], check=True)
  File "/ifs/home/dtucker/.local/pipx/venvs/git-rebase-branches/lib/python3.12/site-packages/git_rebase_branches.py", line 183, in run
    return subprocess.run(command, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['git', 'switch', 'backups']' returned non-zero exit status 1.