Fast git prompt

.zshrc

# Load oh-my-zsh first
source $ZSH/oh-my-zsh.sh

# If we are on a big repo, re-define git prompt
function git_prompt_info() {
    if [[ "$(command git config --get oh-my-zsh.hide-status 2>/dev/null)" != "1" ]]; then
        ref=$(command git symbolic-ref HEAD 2> /dev/null) || \
        ref=$(command git rev-parse --short HEAD 2> /dev/null) || return 0
        echo "$ZSH_THEME_GIT_PROMPT_PREFIX${ref#refs/heads/}$ZSH_THEME_GIT_PROMPT_SUFFIX"
    fi
}
function git_prompt_status() {
    echo ''
}