To cite package ‘pkgcache’ in publications use:

  Csárdi G (2024). _pkgcache: Cache 'CRAN'-Like Metadata and R
  Packages_. R package version 2.2.2.9000, ,
  <https://github.com/r-lib/pkgcache>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pkgcache: Cache 'CRAN'-Like Metadata and R Packages},
    author = {Gábor Csárdi},
    year = {2024},
    note = {R package version 2.2.2.9000, 
},
    url = {https://github.com/r-lib/pkgcache},
  }