Cleanup parsed refs for git over HTTP

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Improve refs parsing for git over http

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Version to 6.3.0

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Pending test to test filter and sort"
Merge branch 'master' into sorting-issues