[Swan-commit] Changes to ref refs/heads/master

[Antony Antony]

New commits:
commit 87799b2e5aa68bbbeff9491bfe2df11e123d32d7
Author: Antony Antony <antony at phenome.org>
Date:   Fri Jun 28 09:15:22 2019 +0000

    building: use git commands insted of accessing .git directory
    
    when using 'git worktree' .git is a file and not a directory.
    Use appropriate git commands to get branch name, HEAD.
    assuming .git is directory is not correct with 'worktree'