how to make a release tag in a forked repo in github code example
Example 1: test project at a previous point in history in github
$git checkout 9193513c5b1bc063b35b830101fe7cf0d9ecffca
Note: checking out '9193513c5b1bc063b35b830101fe7cf0d9ecffca'.
You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.
Example 2: test project at a previous point in history in github
$git checkout master