My git fork/upstream synchronization script

upstream.sh

#!/bin/bash

for D in *; do
  if [ -d "${D}" ]; then
    cd ${D}
    echo ${D}
    echo ================================
    
    git fetch upstream
    git checkout master
    git merge --ff --no-commit upstream/master
    git push

    echo ================================
    echo
    cd ..
  fi
done