Upload a file with a comma in its name with curl

How can I upload a file named yes, this filename has a comma.txt with the cli curl?

You would normally do this to upload a file with curl:

curl --progress-bar -F "fileUpload=@filename.txt"

However curl interprets commas as multiple files to upload, so this will not work:

curl --progress-bar -F "fileUpload=@yes, this filename has a comma.txt"

How can I escape the filename?

I already found a workaround by creating a temporary symlink to the original file and pass that to curl. However the problem is that the filename that curl sends to the server is the filename of the symlink, not the original file.