What command line did you execute?
$ git cl upload
$ git patch <cl#>

What was the output?
"Trying to patch a change from https://include.googlesource.com/grasshopper but this repo appears to be https://include.googlesource.com/grasshopper/"

What did you expect instead?
Expected the patch to work. Removed the extra "/" from .git/config and that resolved the issue. Would be great if this wasn't treated as an error.