Hmm what features would a git synced via -
https://github.com/simonthum/git-sync #this gives low friction commits/pull/push
Using https://github.com/rexim/org-cliplink #this gives nice looking links in your orgmode
When added to orgmode it far past what a standalone bookmarks managerey thing does.
ie - follow up to this github issue in 3 weeks with a bookmark in the TODO
Ymmv of course.