`pathlib.Path.exists()` fails on windows with a github URL

[andyk]

Inside _get_all_remotes() inside git_manager, we are currently using Path.exists() to test whether a string is a local path or not. When it isn't a local path, it is a github url, and this raises an error in Windows (but not linux).

agentos/pcs/git_manager.py

Lines 126 to 130 in be38e02

	# If path, assume a default repo clone and find default repo URLs.
	if remote_name == "origin" and Path(remote_uri).exists():
	with porcelain.open_repo_closing(remote_uri) as local_repo:
	return self._get_all_remotes(local_repo)
	return remotes

This fails in windows:

>>> import pathlib
>>> p = pathlib.Path('https:\\github.com\\DLR-RM\\stable-baselines3.git')
>>> p
WindowsPath('https:/github.com/DLR-RM/stable-baselines3.git')
>>> p.exists()
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "C:\Python39\lib\pathlib.py", line 1407, in exists
    self.stat()
  File "C:\Python39\lib\pathlib.py", line 1221, in stat
    return self._accessor.stat(self)
OSError: [WinError 123] The filename, directory name, or volume label syntax is incorrect: 'https:\\github.com\\DLR-RM\\stable-baselines3.git'

...but not in Linux:

>>> import pathlib
>>> pathlib.Path('https:\\github.com\\DLR-RM\\stable-baselines3.git')
PosixPath('https:\\github.com\\DLR-RM\\stable-baselines3.git')
>>> p = pathlib.Path('https:\\github.com\\DLR-RM\\stable-baselines3.git')
>>> p
PosixPath('https:\\github.com\\DLR-RM\\stable-baselines3.git')
>>> p.exists()
False