first commit in branch

Question

Whith command

git rev-list --max-parents=0 HEAD

I get first commit in project

37a8bdc19ce1fd41ebfa1611621da3b30e92ff03

With this two I get the same output:

git rev-list --max-parents=0 master
git rev-list --max-parents=0 branch1

How I can get the first commit in branch named "branch1"?

Answer 1

Approach: list all commits that are "new" in the branch compared to master and pick the first one:

git log --no-merges --reverse --format='%H' master..branch | head -n1

or

git rev-list --no-merges --reverse origin/LIVE..origin/UAT | head -n1