Add ability to quickly copy commit message from existing commit

Problem to solve

I often need to copy the commit message of an existing commit. Currently, this isn't a super smooth process - I have to open up the commit details, copy the commit summary ("Add reusable project_selector component" in the screenshot below), and then separately copy the commit body ("This commit adds a reusable UI component..."). The commit summary is also hard to select without also selecting my avatar picture.

It would be great to be able to copy this message with a single click, similar to how one can copy a commit SHA:

Target audience

• Sasha, Software Developer, https://design.gitlab.com/research/personas#persona-sasha

Further details

I would use this feature as part of my workflow when force pushing to a branch:

• I create an MR and ask for feedback.
• Someone takes a look and leaves some suggestions.
• I update my branch with the suggestions, but I want to roll my updates into my previous commit. So, I do the following:
  • Make my changes on my branch
  • "Undo" the last commit: git reset --soft HEAD~1
  • Copy the commit message from GitLab.com using the somewhat painful process described in the Problem to solve section
  • Re-commit my changes with the same message as before: git add --all, git commit -m "<previous commit message here>"
  • Rebase my branch to incorporate any new changes: git fetch, git rebase origin/master
  • Update the remote branch: git push --force

Whether or not this is a best practice is debatable 😄, but there may also be other use cases for copying a commit's message.

Proposal

Add a button that allows the entire commit message to be copied with a single click.