Read the Docs build information Build id: 98001 Project: espressif-esp-adf Version: latest Commit: None Date: 2018-04-02T07:37:29.662094Z State: finished Success: False [rtd-command-info] start-time: 2018-04-02T12:37:30.205225Z, end-time: 2018-04-02T12:37:30.678302Z, duration: 0, exit-code: 0 git clone --recursive git@github.com:espressif/esp-adf.git . Cloning into '.'... warning: You appear to have cloned an empty repository. [rtd-command-info] start-time: 2018-04-02T12:37:30.785180Z, end-time: 2018-04-02T12:37:30.793996Z, duration: 0, exit-code: 1 git checkout --force master error: pathspec 'master' did not match any file(s) known to git.