Controls the behavior of a git_push object.
If the transport being used to push to the remote requires the creation of a pack file, this controls the number of worker threads used by the packbuilder when creating that pack file to be sent to the remote.
If set to 0, the packbuilder will auto-detect the number of threads to create. The default value is 1.
Whether to allow off-site redirects. If this is not specified, the http.followRedirects
configuration setting will be consulted.