The concerns about refreezing meat (ground or otherwise) have to do both with safety and quality. If you safely thawed the meat and did not keep it long, refreezing shouldn’t be a problem. Don’t take my word for it, though. Take a look at what the USDA has to say about it.
https://www.fsis.usda.gov/wps/portal/fsis/topics/food-safety-education/get-answers/food-safety-fact-sheets/safe-food-handling/freezing-and-food-safety