This command line tool is a small wrapper of selfupdate.DetectLatest().
Please install using go get.
$ go get -u github.com/rhysd/go-github-selfupdate/cmd/detect-latest-release
To know the usage, please try the command without any argument.
$ detect-latest-release
For example, following shows the latest version of github-clone-all.
$ detect-latest-release rhysd/github-clone-all