[FEATURE]: Support GIT_BRANCH env var for Azure pipelines in 5.x

[Ninho67]

Prerequisites

• I have written a descriptive issue title
• I have searched issues to ensure it has not already been reported

GitVersion package

GitVersion.MsBuild

GitVersion version

5.x

Operating system

N/A

What are you seeing?

Currently, gitversion 5.12.0 does not support a multi-repo build on azure pipelines. It uses solely BUILD_SOURCEBRANCH to compute the stamped version.

What is expected?

We would like to override the branch name with GIT_BRANCH environment variable, just as it works in gitversion 6.x.

We don't want to upgrade to gitversion 6.x because it does not support Visual Studio (more exactly the .net framework version of msbuild) anymore.

Steps to Reproduce

Create a pipeline with multiple repositories to build, including one that uses gitversion 5.12.0 for versioning.
Build.

The output version is {major}.{minor}.{patch}-{pipeline's branch name}.x

with {major}.{minor}.{patch} the valid version.

RepositoryFixture Test

No response

Output log or link to your CI build (if appropriate).

[arturcic]

@Ninho67 I'm sorry to disappoint you, the 5.x version is not supported anymore, we try to focus our effort on 6.x and up. I would rather try find options to bring VS support back in a way that the team can agree supporting, instead of implement new stuff in 5.x

[Ninho67]

Thanks for your reply Artur. I saw your message a bit late and have already submitted a PR on support/5.x, feel free to ignore then.

We've forked the project and have created a unofficial 5.12.1 in our private artifacts feed to solve our issue. In the future, if v6 supports VS again, we will for sure upgrade.