Key bindings for git with fzf (https://junegunn.kr/2016/07/fzf-git/)

functions.sh

# GIT heart FZF
# -------------

is_in_git_repo() {
  git rev-parse HEAD > /dev/null 2>&1
}

fzf-down() {
  fzf --height 50% --min-height 20 --border --bind ctrl-/:toggle-preview "$@"
}

_gf() {
  is_in_git_repo || return
  git -c color.status=always status --short |
  fzf-down -m --ansi --nth 2..,.. \
    --preview '(git diff --color=always -- {-1} | sed 1,4d; cat {-1})' |
  cut -c4- | sed 's/.* -> //'
}

_gb() {
  is_in_git_repo || return
  git branch -a --color=always | grep -v '/HEAD\s' | sort |
  fzf-down --ansi --multi --tac --preview-window right:70% \
    --preview 'git log --oneline --graph --date=short --color=always --pretty="format:%C(auto)%cd %h%d %s" $(sed s/^..// <<< {} | cut -d" " -f1)' |
  sed 's/^..//' | cut -d' ' -f1 |
  sed 's#^remotes/##'
}

_gt() {
  is_in_git_repo || return
  git tag --sort -version:refname |
  fzf-down --multi --preview-window right:70% \
    --preview 'git show --color=always {}'
}

_gh() {
  is_in_git_repo || return
  git log --date=short --format="%C(green)%C(bold)%cd %C(auto)%h%d %s (%an)" --graph --color=always |
  fzf-down --ansi --no-sort --reverse --multi --bind 'ctrl-s:toggle-sort' \
    --header 'Press CTRL-S to toggle sort' \
    --preview 'grep -o "[a-f0-9]\{7,\}" <<< {} | xargs git show --color=always' |
  grep -o "[a-f0-9]\{7,\}"
}

_gr() {
  is_in_git_repo || return
  git remote -v | awk '{print $1 "\t" $2}' | uniq |
  fzf-down --tac \
    --preview 'git log --oneline --graph --date=short --pretty="format:%C(auto)%cd %h%d %s" {1}' |
  cut -d$'\t' -f1
}

_gs() {
  is_in_git_repo || return
  git stash list | fzf-down --reverse -d: --preview 'git show --color=always {1}' |
  cut -d: -f1
}

key-binding.bash

if [[ $- =~ i ]]; then
  bind '"\er": redraw-current-line'
  bind '"\C-g\C-f": "$(_gf)\e\C-e\er"'
  bind '"\C-g\C-b": "$(_gb)\e\C-e\er"'
  bind '"\C-g\C-t": "$(_gt)\e\C-e\er"'
  bind '"\C-g\C-h": "$(_gh)\e\C-e\er"'
  bind '"\C-g\C-r": "$(_gr)\e\C-e\er"'
  bind '"\C-g\C-s": "$(_gs)\e\C-e\er"'
fi

key-binding.zsh

join-lines() {
  local item
  while read item; do
    echo -n "${(q)item} "
  done
}

() {
  local c
  for c in $@; do
    eval "fzf-g$c-widget() { local result=\$(_g$c | join-lines); zle reset-prompt; LBUFFER+=\$result }"
    eval "zle -N fzf-g$c-widget"
    eval "bindkey '^g^$c' fzf-g$c-widget"
  done
} f b t r h s

@rockyzhang24 I see, I was pretty much using this for the visualization but that's a nice part too.
For the _gb function, I just noticed that moving those commands above will remove the * for the current branch. So it is likely intentional to leave it in fzf list output. I was only paying attention to the color highlight so I really missed that.

If you use a non-standard diff tool (such as bcompare), you'll need to tell git to use the built-in with the --no-ext-diff flag:

_gf() {
  is_in_git_repo || return
  git -c color.status=always status --short |
  fzf-down -m --ansi --nth 2..,.. \
    --preview '(git diff --no-ext-diff --color=always -- {-1} | sed 1,4d; cat {-1})' |
  cut -c4- | sed 's/.* -> //'
}