Hadrian build failed

Hi, I'm trying to build with hadrian ( https://blogs.ncl.ac.uk/andreymokhov/building-ghc-on-windows/) I get an error when running: stack exec hadrian -- --directory ".." -j --flavour=quickest --configure md5sum: 'standard input': no properly formatted MD5 checksum lines found ERROR: mingw-w64-x86_64-crt-git-5.0.0.4795.e3d96cb1-1-any.pkg.tar.xz appears to be corrupted, please delete it and try again. ) Deleting and trying again results in the same error. Any idea on how to solve this? Yotam