Pull and update all github repositories and all branches for a given user

update-all-git-branches.sh

#! /usr/bin/env bash

set -vx

gh_token=/path/to/my/gh-token.txt
account=my_account

# login to github
gh auth login --with-token < "$gh_token"

# first, clone any repos which have been added
gh repo list "$account" | while read -r repo _; do   gh repo clone "$repo" "$repo"; done

# find all git repos rooted below this directory
for repo in `find $(pwd -P) -name ".git" -type d`
do
    # change into the main folder for the repo
    cd "$repo"/..

    # find all of the branch names
    for b in `git branch -r  | grep -v 'HEAD' | sed 's_origin/__'`
    do
        # checkout and pull/update that branch
        git checkout $b
    done

done

This script requires the GitHub CLI.