code: def _resolved_source_hash_manifest_arg(target_path):
      if os.path.isfile(target_path):
          return util.file_sha1(target_path)
      return "-"
  
imports: import os
  import re
  from guild import manifest
  from guild import util
  from guild import var
label_desc: Use image node_id 5 for calling a global function with example usage: _resolved_source_hash_manifest_arg(target_path) and returns: str, util