FindClosesPullRequestComments finds the "closes #123" instructions from the commit messages.

The possible upstream statuses.

The possible upstream statuses.

The possible upstream statuses.

The possible upstream statuses.

Missing is a sentinel zero-value for object id (aka sha).

RebaseAborted indicates that an in-progress rebase was aborted.

The various types of objects in git.

The various types of objects in git.

The various types of objects in git.

The various types of objects in git.

GitStatus is the status of the git repository.

UpstreamStatus is the status of a git ref (usually a branch) relative to its upstream.