code: def fix_germline_samplename(in_file, sample_name, data):
      
      out_file = "%s-fixnames%s" % utils.splitext_plus(in_file)
      if not utils.file_exists(out_file):
          with file_transaction(data, out_file) as tx_out_file:
              sample_file = "%s-samples.txt" % utils.splitext_plus(tx_out_file)[0]
              with open(sample_file, "w") as out_handle:
                  out_handle.write("%s\n" % sample_name)
              cmd = ("bcftools reheader -s {sample_file} {in_file} -o {tx_out_file}")
              do.run(cmd.format(**locals()), "Fix germline samplename: %s" % sample_name)
      return vcfutils.bgzip_and_index(out_file, data["config"])
docs: Replace germline sample names, originally from normal BAM file.