Before this commit this would error saying that the repo doesn't exist yet.
With this commit it creates the directory, but only after checking that
the repo exists.
This change also adds testcases for checking if the specified path is
nested under the valid base paths and fixes an edge case where the user
could synchronize into their home directory directly.
Co-authored-by: shreyas-goenka <88374338+shreyas-goenka@users.noreply.github.com>
Serge Smertin
Pieter Noordhuis