backup_github: New role

roles/backup_github/files/backup-github.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+ORGS="foo-sh"
+
+set -eu
+umask 027
+
+cd /srv/backup/github.com
+
+for _org in $ORGS ; do
+    curl -sSf "https://api.github.com/orgs/foo-sh/repos" | jq -r '.[] | .name' | \
+        while read -r _repo
+    do
+        _url="https://github.com/${_org}/${_repo}.git"
+        _gitdir="${_org}/${_repo}"
+        if [ ! -d "$_gitdir" ]; then
+            mkdir -p "$_gitdir"
+            git --git-dir="$_gitdir" init --quiet --bare
+        fi
+        git --git-dir="$_gitdir" fetch --quiet --force --prune --tags "$_url" "refs/heads/*:refs/heads/*"
+    done
+done