code: async function gitStashSave(options) {
    debug('Stashing files...')
    // Save ref to the current index
    indexTree = await writeTree(options)
    // Add working copy changes to index
    await execGit(['add', '.'], options)
    // Save ref to the working copy index
    workingCopyTree = await writeTree(options)
    // Restore the current index
    await execGit(['read-tree', indexTree], options)
    // Remove all modifications
    await execGit(['checkout-index', '-af'], options)
    // await execGit(['clean', '-dfx'], options)
    debug('Done stashing files!')
    return [workingCopyTree, indexTree]
  }
docs: eslint-disable-next-line