Blame command returns null result for gradle module

[unkali]

Version

All versions after 5.5.1

Operating System

MacOS

Bug description

I have a gradle project with the following repository structure (Java version : 17)

my-api
    .github/
    .idea/
    gradle/
    .gitignore
    settings.gradle
    my-api
        build.gradle
        src
            main
                java
                    com.example
                        Application.java

The blame command works for files which are direct children of my-api except for any files under my-api/my-api module.
Please see the following code that I am using to check this behaviour

public class Jgit {

    static final String REPO = "/Users/kapil-mangtani/IdeaProjects/my-api/.git";
    static final String PATH1 = "settings.gradle";
    static final String PATH2 = ".github/workflows/build-deploy-dev.yml";
    static final String PATH3 = "my-api/src/main/java/com/example/Application.java";

    public static void main(String[] args) throws Exception {
        FileRepositoryBuilder builder = new FileRepositoryBuilder();
        Git git = new Git(builder.setGitDir(new File(REPO)).readEnvironment().findGitDir().build());

        BlameCommand blameCommand = git.blame().setFilePath(PATH1);
        BlameResult result = blameCommand.call();
        assert result != null;   // TRUE

        BlameCommand blameCommand1 = git.blame().setFilePath(PATH2);
        BlameResult result1 = blameCommand1.call();
        assert result1 != null;  // TRUE

        BlameCommand blameCommand2 = git.blame().setFilePath(PATH3);
        BlameResult result2 = blameCommand2.call();
        assert result2 != null;  // FALSE for versions above 5.5.1
}

In my build.gradle file, I have
implementation 'org.eclipse.jgit:org.eclipse.jgit:<version>'

Now when the version is 5.5.1 or below, result2 is not null and contains the blame result, but any version after that eg. 5.13.3, or 6.2.0 or even the latest one 7.1.0 returns the result2 as null. I have verified the same behaviour using the standalone sh file as well for the same versions using the blame -w command

Actual behavior

blame result is null as seen in the code snippet above

Expected behavior

blame result to be non-null with author and commit information (as seen in versions 5.5.1 and prior)

Relevant log output

No response

Other information

No response

[tomaswolf]

Please provide a Github public repo with which one can reproduce this.