https://github.com/bayandin/chromedriver It seems that the above repo is a mirror of one particular subdirectory of the main chromium repository https://chromium.googlesource.com/chromium/src/ https://chromium.googlesource.com/chromium/src/+/master/chrome/test/chromedriver/ I don't know how a repo can be partially cloned. Could anybody let me know how this is done? Thanks. -- Regards, Peng