put this somewhere in your $PATH and run `git changes` in a repo to show differences in your local commits and upstream

git-changes

#!/bin/bash

# Execute git fetch
git fetch &

# Get the pid of the `git fetch` process
pid=$!

# Characters used for the spinner animation
spin='⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏'

i=0
printf "  "
while kill -0 $pid 2>/dev/null
do
  i=$(( (i+1) %10 ))
  printf "\r\r${spin:$i:1} "
  sleep .05
done
printf "\r\r"

range=${1-FETCH_HEAD}
echo 'UPSTREAM COMMITS:'
git --no-pager log --abbrev-commit --format='%C(red)<- %C(yellow)%h %Cblue%aN %Cgreen%ar %Creset%s' ..$range
echo 'LOCAL COMMITS:'
git --no-pager log --abbrev-commit --format='%C(green)-> %C(yellow)%h %Cblue%aN %Cgreen%ar %Creset%s' $range..