Script that fetches and pulls all remote branches of a bunch of git repositories

fetchall.sh

#!/bin/bash

#usage: ./fetchall.sh <dir-containing-several-git-repos>

input=$1

for git in $(find $input -maxdepth 1 -mindepth 1 -type d -printf '%f\n')
do
    git -C $input/$git branch -r | grep -v '\->' | while read remote; do git -C $input/$git branch --track "${remote#origin/}" "$remote"; done
    git -C $input/$git fetch --all
    git -C $input/$git pull --all
done