def git_version(version_: str) -> str:
    '\n    Return a version to identify the state of the underlying git repo. The version will\n    indicate whether the head of the current git-backed working directory is tied to a\n    release tag or not : it will indicate the former with a \'release:{version}\' prefix\n    and the latter with a \'dev0\' prefix. Following the prefix will be a sha of the current\n    branch head. Finally, a "dirty" suffix is appended to indicate that uncommitted\n    changes are present.\n\n    :param str version_: Semver version\n    :return: Found Airflow version in Git repo\n    :rtype: str\n    '
    try:
        import git
        try:
            repo = git.Repo(os.path.join(*[my_dir, '.git']))
        except git.NoSuchPathError:
            logger.warning('.git directory not found: Cannot compute the git version')
            return ''
        except git.InvalidGitRepositoryError:
            logger.warning('Invalid .git directory not found: Cannot compute the git version')
            return ''
    except ImportError:
        logger.warning('gitpython not found: Cannot compute the git version.')
        return ''
    if repo:
        sha = repo.head.commit.hexsha
        if repo.is_dirty():
            return '.dev0+{sha}.dirty'.format(sha=sha)
        return '.release:{version}+{sha}'.format(version=version_, sha=sha)
    else:
        return 'no_git_version'
Return a version to identify the state of the underlying git repo. The version will
indicate whether the head of the current git-backed working directory is tied to a
release tag or not : it will indicate the former with a 'release:{version}' prefix
and the latter with a 'dev0' prefix. Following the prefix will be a sha of the current
branch head. Finally, a "dirty" suffix is appended to indicate that uncommitted
changes are present.

:param str version_: Semver version
:return: Found Airflow version in Git repo
:rtype: str
def git_version(version_: str) -> str:
    '\n    Return a version to identify the state of the underlying git repo. The version will\n    indicate whether the head of the current git-backed working directory is tied to a\n    release tag or not : it will indicate the former with a \'release:{version}\' prefix\n    and the latter with a \'dev0\' prefix. Following the prefix will be a sha of the current\n    branch head. Finally, a "dirty" suffix is appended to indicate that uncommitted\n    changes are present.\n\n    :param str version_: Semver version\n    :return: Found Airflow version in Git repo\n    :rtype: str\n    '
    try:
        import git
        try:
            repo = git.Repo(os.path.join(*[my_dir, '.git']))
        except git.NoSuchPathError:
            logger.warning('.git directory not found: Cannot compute the git version')
            return 
        except git.InvalidGitRepositoryError:
            logger.warning('Invalid .git directory not found: Cannot compute the git version')
            return 
    except ImportError:
        logger.warning('gitpython not found: Cannot compute the git version.')
        return 
    if repo:
        sha = repo.head.commit.hexsha
        if repo.is_dirty():
            return '.dev0+{sha}.dirty'.format(sha=sha)
        return '.release:{version}+{sha}'.format(version=version_, sha=sha)
    else:
        return 'no_git_version'