You can clone with
HTTPS or Subversion.
If you have multiple files for same subtitle, they are not recognized correctly and result in "invalid" subtitle.
If you delete one of them, the other works
please no bug reports on github,
use the xbmc forum instead.
err ..ok..but why?
"Finally, a note for those of you who are tracking and submitting bugs. You may notice that Github has an “Issues” section. The Team would very much appreciate it if you did not submit bug reports through that section, but rather continued to use the forums and Trac. At the moment, the Team is using Issues as a concise means of grouping and identifying particular bugs that they gather from the forum and Trac sources. Thanks for your help!"