AWS S3 FTP or command line download to box

If I want to use the aws sync command via the aws command line interface what do I specify as the box drive (instead of ds004789-download folder) in the following example?  Assume that all the files are smaller than the size limit and that my file name has spaces.  Is there anyway to keep track of the files that failed so I can manually copy over?

aws s3 sync --no-sign-request s3://openneuro.org/ds004789 ds004789-download/

Is there a way to ftp via command line from aws s3 bucket to box?  I tried WinSCP, but it seems like you have to know the sign in info for the s3 bucket which I am not sure of.