How can I determine when a Git branch was created?

Question

Is there a way to determine when a Git branch was created?

I have a branch in my repository, and and I don't remember creating it and thought maybe seeing the creation timestamp would jog my memory.

Answer 1

Use

git show --summary `git merge-base foo master`

If you’d rather see it in context using gitk, then use

gitk --all --select-commit=`git merge-base foo master`

(where foo is the name of the branch you are looking for.)