add develop-based.md

Author: ltitanb

develop-based.md

@@ -0,0 +1,32 @@
+### in progress
+
+- make sure you have set the upstream remote
+
+```
+git remote add upstream https://github.com/ethereum-optimism/optimism/
+```
+
+- only rebase from released tags of upstream
+- check if you need rebasing with
+
+```
+git merge-base --is-ancestor v1.13.2  based/develop  && echo "Already rebased"
+```
+
+- if you need to rebase on a new tag
+
+```
+git checkout based/develop
+git rebase --onto upstream/v1.13.3  upstream/v1.13.2  based/develop
+git push --force-with-lease
+```
+
+- when ready push to based/main and make a new tag with v{op-node-version}-based-{based-version}. Make sure to bump {based-version} on based-op and op-geth whenever there's a change
+
+```
+git switch based/main
+git merge --ff-only based/develop
+git push
+git tag v1.13.2-based-0.2.3
+git push origin v1.13.2-based-0.2.3
+```