code: def branch():
      """Returns the name of the current branch"""
      name = __git("rev-parse", "--abbrev-ref", "HEAD")
      name = name.rstrip()
      return name
  
file_path: cugraph/ci/utils/git_helpers.py
imports: import subprocess
  import os
  import re
label_desc: Use image node_id 4 for calling a global function with example usage: branch() and returns: name