Get input sample for each chip bam file.

def _check(sample, data):
    """Get input sample for each chip bam file."""
    if dd.get_chip_method(sample).lower() == "atac":
        return [sample]
    if dd.get_phenotype(sample) == "input":
        return None
    for origin in data:
        if dd.get_batch(sample) in (dd.get_batches(origin[0]) or []) and dd.get_phenotype(origin[0]) == "input":
            sample["work_bam_input"] = origin[0].get("work_bam")
            return [sample]
    return [sample]