Ios remote build bash error

Running from windows. AutomationTool log output excerpt:

ProcessResult.StdOut:   [Remote] Uploading scripts...
ProcessResult.StdOut:     bash: -c: line 0: syntax error near unexpected token `('
ProcessResult.StdOut:     bash: -c: line 0: `mkdir -p /Users/username/UE4/Builds/MSI/C/Program_Files_(x86)/UE_4.21/Engine && rsync --server -vRze.Ls . /Users/username/UE4/Builds/MSI/C/Program_Files_(x86)/UE_4.21/Engine/'

no shebang (#!) so bash is limited. any way to clean this up? maybe move the application to another drive location?