ubuntu@ubuntu-VirtualBox:~/rockbox$ git reset --hard origin/master
HEAD is now at 7272f82 Imx233 Disable Autoslow only at maximum cpu frequency
ubuntu@ubuntu-VirtualBox:~/rockbox$ git branch
* master
ubuntu@ubuntu-VirtualBox:~/rockbox$ git fetch http://gerrit.rockbox.org/rockbox refs/changes/74/1674/2 && git cherry-pick FETCH_HEAD
From http://gerrit.rockbox.org/rockbox
 * branch            refs/changes/74/1674/2 -> FETCH_HEAD

*** Please tell me who you are.

Run

  git config --global user.email "you@example.com"
  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: unable to auto-detect email address (got 'ubuntu@ubuntu-VirtualBox.(none)')
ubuntu@ubuntu-VirtualBox:~/rockbox$