Hi,
the��repository specification
'github://<user name>/<project name>[:comitish]/<path to filetree repo>'
doesn't support slashes in commitish.
For example if I have branch named 'feature/something', or 'hotfix/otherthing' it breaks.
There may be conflict also with path (imagine having branch repository/repository and and actual folder called repository), so this may require something special... like having another separator... i.e. <project name>[:commitish[:]]/<path to filetree repo>? (Optional ending colon.)
Peter