Function jj_lib::git::push_branches

pub fn push_branches(
    mut_repo: &mut MutableRepo,
    git_repo: &Repository,
    remote_name: &str,
    targets: &GitBranchPushTargets,
    callbacks: RemoteCallbacks<'_>
) -> Result<(), GitPushError>

Pushes the specified branches and updates the repo view accordingly.