Clone and fork a team's first 100 GitHub repos. Then, add remotes for all potential forks.

get_repos.sh

#!/usr/bin/env bash

# Clone and fork a team's first 100 GitHub repos. Then, add remotes for all potential forks.
#
# Requires:
#   - git: https://git-scm.com/downloads
#   - github-cli: https://github.com/cli/cli
#   - jq: https://stedolan.github.io/jq/download/
#
# The first time you run this script or use gh for the first time in your system
# you need to authenticate yourself as follows:
#   gh auth login

APPLICATION_NAME=$0
ORGANIZATION=$1
TEAM=$2

function printHelp {
  echo "usage: $APPLICATION_NAME <organization> <team> [<teamMemberToIgnore> ...]"
  echo "    organization                Name of a GitHub organization."
  echo "    team                        Name of a GitHub team."
  echo "    teamMembersToIgnore         Whitespace separated list of team members to ignore."
  exit 1
}

if [[ -z "$2" ]]; then
  printHelp
fi

RESPONSE="$(gh api graphql -f query="query { \
  viewer { \
    login \
  } \
  organization(login: \""$ORGANIZATION"\") { \
    team(slug: \""$TEAM"\") { \
      members(first: 100, orderBy: {field: LOGIN, direction: ASC}) { \
        nodes { \
          login \
        } \
      } \
      repositories(first: 100, orderBy: {field: NAME, direction: ASC}) { \
        nodes { \
          sshUrl \
          isArchived \
        } \
      } \
    } \
  } \
}" | jq '.data | { currentUser: .viewer.login, team: .organization.team }')"

CURRENT_USER="$(jq -r '.currentUser' <<<"${RESPONSE}")"
TEAM_MEMBERS="$(jq -r --arg CURRENT_USER "$CURRENT_USER" '.team.members.nodes[].login | select(. != $CURRENT_USER)' <<<"${RESPONSE}")"
REPOSITORIES="$(jq -r '.team.repositories.nodes[] | select(.isArchived==false) | .sshUrl' <<<"${RESPONSE}")"

if [[ -n "$3" ]]; then
  shift
  shift
  for teamMemberToIgnore; do
    TEAM_MEMBERS=("${TEAM_MEMBERS/$teamMemberToIgnore/}")
  done
fi

function setForkRepoSettings {
  repositoryName=$1
  echo "Updating settings for fork $CURRENT_USER/$repositoryName"
  gh api --silent -X PATCH "/repos/$CURRENT_USER/$repositoryName" \
    -F allow_merge_commit=false \
    -F allow_squash_merge=true \
    -F allow_rebase_merge=true \
    -F delete_branch_on_merge=true \
    -F has_wiki=false \
    -F has_projects=false
  gh api --silent -X PUT "/repos/$CURRENT_USER/$repositoryName/actions/permissions" \
    -F enabled=false
  gh api --silent -X PUT "/orgs/$ORGANIZATION/teams/$TEAM/repos/$CURRENT_USER/$repositoryName" \
    -F permission=push
}

function addRemote {
  teamMember=$1
  repository=$2
  forkRepository=${repository/$ORGANIZATION/$teamMember}
  echo "Adding remote for fork ${forkRepository}"
  git remote add "${teamMember,,}" "${forkRepository}"
}

for repository in ${REPOSITORIES}; do
  repositoryName=${repository##*/}
  repositoryName=${repositoryName%.git}
  gh repo clone "${repository}" -- -o upstream
  cd "$repositoryName" || exit
  gh repo fork --default-branch-only --remote
  setForkRepoSettings "${repositoryName}"
  for teamMember in ${TEAM_MEMBERS}; do
    addRemote "${teamMember}" "${repository}"
  done
  gh repo set-default $ORGANIZATION/$repositoryName
  cd ..
done

Happy new year @xalvarez 🎆 Please notice my fork of this project which basically adds two options. By default in my fork fork creation and adding remotes for team members has been disabled but can be enabled via flags. Hope you like it. Feel free to merge it back :)