Edit ~/.zshrc and uncomment the following line
DISABLE_UNTRACKED_FILES_DIRTY="true"
add this to projects mounted over NFS
git config --add oh-my-zsh.hide-status 1
also, you could edit ~/.oh-my-zsh/plugins/gitfast/gitfast.plugin.zsh
but changes might potentially be lost in udpates
function git_prompt_info() {
ref=$(git symbolic-ref HEAD 2> /dev/null) || return
echo "$ZSH_THEME_GIT_PROMPT_PREFIX${ref#refs/heads/}$ZSH_THEME_GIT_PROMPT_SUFFIX"
}