worktree: submodules, missing err validation on load config
worktree: submodules, missing err validation on load config

go-git/go-git,src-d/go-git,fuchsia-mirror/third_party-github.com-src-d-go-git,mcuadros/go-git,go-git/go-git,mcuadros/go-git,src-d/go-git,fuchsia-mirror/third_party-github.com-src-d-go-git