To cite package ‘gitignore’ in publications use:

  Massicotte P (2024). _gitignore: Create Useful .gitignore Files for
  your Project_. R package version 0.1.8.9000, ,
  <https://github.com/ropensci/gitignore>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gitignore: Create Useful .gitignore Files for your Project},
    author = {Philippe Massicotte},
    year = {2024},
    note = {R package version 0.1.8.9000, 
},
    url = {https://github.com/ropensci/gitignore},
  }