To cite package ‘mockr’ in publications use:

  Müller K (2022). _mockr: Mocking in R_. R package version 0.2.0.9002,
  , <https://github.com/krlmlr/mockr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mockr: Mocking in R},
    author = {Kirill Müller},
    year = {2022},
    note = {R package version 0.2.0.9002, },
    url = {https://github.com/krlmlr/mockr},
  }