To cite package ‘git2r’ in publications use:

  Widgren S (2024). _git2r: Provides Access to Git Repositories_. R
  package version 0.35.0, <https://CRAN.R-project.org/package=git2r>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {git2r: Provides Access to Git Repositories},
    author = {Stefan Widgren},
    year = {2024},
    note = {R package version 0.35.0},
    url = {https://CRAN.R-project.org/package=git2r},
  }