Small fix in setup-git to preserve file group
Small fix in setup-git to preserve file group

peetkes/mlvagrant,peetkes/mlvagrant,vladistan/mlvagrant,pawelkat/mlvagrant,pawelkat/mlvagrant,rcouronne/mlvagrant,daveegrant/mlvagrant,vladistan/mlvagrant,daveegrant/mlvagrant,grtjn/mlvagrant,rcouronne/mlvagrant,grtjn/mlvagrant