[Question]: How to get "git diff" information from one pipeline to another

[ser789654]

Task name

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Task version

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Environment type (Please select at least one enviroment where you face this issue)

• Self-Hosted
• Microsoft Hosted
• VMSS Pool
• Container

Azure DevOps Server type

dev.azure.com (formerly visualstudio.com)

Azure DevOps Server Version (if applicable)

No response

Operation system

ubuntu-latest

Question

I have PR pipeline in which I build Dockerfiles, but only those which are changed. I get paths of changed files using git diff command. After PR is completed the source branch is merged but not deleted. I have release pipeline on main branch which is triggered after merge to main. This pipeline will perform same build only on changed files and then push those images to container registry.

But git diff in this pipeline wont work since agent is checked out on main branch. How can I get the same information in this pipeline? I looked up git log command in which I could do git diff against commitId but that wont work If someone else will finish their PR before me. The PR branch still exist, is it possible to somehow get name of this branch in the release pipeline?

[github-actions]

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