# Download SHA1 checksum file
log.write("downloading sha1sum for {}\n".format(source_file))
result = bs_request.DownloadFile(source_hash_file, None, None,
# Download SHA1 checksum file
log.write("downloading sha1sum for {}\n".format(source_file))
result = bs_request.DownloadFile(source_hash_file, None, None,