Access some basic logs.
use SebastianFeldmann\Git\Repository;
$pathToRepo = '/path/to/repo';
$repository = new Respository($pathToRepo);
$log = $repo->getLogOperator();
$files = $log->getChangedFilesSince('1.0.0');
$commits = $log->getCommitsSince('1.0.0');
To get some info about the current index state.
use SebastianFeldmann\Git\Repository;
$pathToRepo = '/path/to/repo';
$repository = new Respository($pathToRepo);
$index = $repo->getIndexOperator();
$files = $index->getStagedFiles();