bin: add git-fork

.local/bin/git-fork

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+repo_name=$(basename "$(git remote get-url origin)")
+
+git remote rename origin upstream
+git remote add origin "git@github.com:thatsmydoing/$repo_name"