Interface to the 'libgit2' library, which is a pure C
    implementation of the 'Git' core methods. Provides access to 'Git'
    repositories to extract data and running some basic 'Git'
    commands.
By default, git2r uses a system installation of the
libgit2 headers and library. However, if a system installation
is not available, builds and uses a bundled version of the
libgit2 source. zlib headers and library. OpenSSL headers and
library (non-macOS). LibSSH2 (optional on non-Windows) to
enable the SSH transport.
'blame.R' 'blob.R' 'branch.R' 'bundle_r_package.R'
'checkout.R' 'commit.R' 'config.R' 'contributions.R'
'credential.R' 'diff.R' 'fetch.R' 'git2r.R' 'index.R'
'libgit2.R' 'merge.R' 'note.R' 'odb.R' 'plot.R' 'pull.R'
'punch_card.R' 'push.R' 'reference.R' 'reflog.R' 'refspec.R'
'remote.R' 'repository.R' 'reset.R' 'revparse.R' 'sha.R'
'signature.R' 'stash.R' 'status.R' 'tag.R' 'time.R' 'tree.R'
'when.R'