Confusion over paths in put(recursive=True)

I'm facing some confusion over how paths are handled in fs.put(recursive=True). In addition, the upload location seems different depending on whether the remote path exists.

If I run this code from ~/workspace/project

    fs = gcsfs.GCSFileSystem()
    fs.put("./data/transformed/", "gs://project/data/transformed/", recursive=True)

Running prior to any files in that bucket, the files are created at gs://project/data/transformed/orkspace/project/data/transformed/. The path is repeated and workspace is missing its first character.

Once the folder is there, then I get this error, as though the upload is using the whole path starting with Users as the destination:

ValueError: Bad Request: https://www.googleapis.com/upload/storage/v1/b/Users/o
Invalid bucket name: 'Users'

My intention is to load the files to gs://project/data/transformed/.

I tried changing the second argument to gs://project/, which stopped the path being repeated, but kept the full relative path less the leading character and the error on the second call.

Let me know if I'm making a basic mistake, thank you.

Start at GCSFileSystem.put with recursive=True and reproduce the example from ~/workspace/project using the stated local and gs://project/data/transformed/ paths. Trace how the destination is formed for an absent versus existing remote path; done means both cases upload files exactly under gs://project/data/transformed/ without duplicating or misreading path components.