Still compare committed difference after squash merging

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I have merged a develop branch into main branch using squash merge. Let's say there are commit A, B, C merged into main from develop. The changes are successfully merged. I can see the squash commit on the main branch and the files are updated.

After that, I created a new branch (b-new) from develop and merged it into develop. However, When I try to sync main with develop again, I can still see the old differences (commit A, B, C). How to resolve this issue?

To clean up:

  • PR #1: merge commit A, B, C from develop into main
  • PR #2: merge b-new into develop
  • PR #3: merge develop into main again (where I see old difference and am stuck right now)
  • I am not able to directly push changes to main without 1 approval
  • The changes will not affect others, so don't need to worry about it.

Thank you.

git-squash branching-and-merging git-merge github git
1 Answers

This scenario, where you have two long-running branches and are using squash merges, is described in the Git FAQ in some detail. Roughly, the answer is that you are bound for a world of pain if you use squash merges with two long-lived branches and there's no way to avoid it.

If develop is intended to be a feature branch, then to avoid seeing those commits, you should recreate it off of main each time, either by deleting it first, or by using git checkout -B develop main. If develop is intended to be a long-running branch along with main, then you need to not use squash merges.

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