➜  pet git:(master) git--no-pager log--oneline-12422e70(HEAD -> master, origin/master) update README.md➜  pet git:(master) git checkout-b testingSwitched to a new branch'testing'➜  pet git:(testing) git commit--allow-empty-sam"first"[testing 8210c2d] first➜  pet git:(testing) git commit--allow-empty-sam"second"[testing feb9b4f] second➜  pet git:(testing) git commit--allow-empty-sam"third"[testing 7120047] third➜  pet git:(testing) git--no-pager log--oneline-47120047(HEAD -> testing) thirdfeb9b4f second8210c2d first2422e70(origin/master, master) update README.md# how to get this branching point (2422e70) from `testing` branch?# git rev-list --boundary branch1...branch2 | grep "^-" | cut -c2-➜  pet git:(testing) git rev-list--boundary testing...master  |grep"^-" |cut-c2-2422e70001b80d186fdd1df1a9227dc3d8e0061e