I have installed on my mac GitHub about 6 months ago and it worked very well. After I have not used it for a small period and I have done all the upgrade (mac, GhitHub and so on). Today I have used again GitHub but It doesn't wish to modify the files when I use the time-line. For instance: I have create a file X and after when I go back with time-line of GitHub this file remains on my finder. In the past this file is removed by GitHub.
I have tried to do some things like for example to re-install it or to give more permission (chmod -R ./repository 777) or to download again the repository but the problem has not disappeared.
After upgrading to OSX El Capitan, I needed to turn off System Integrity Protection for directory modification commands to run properly.
To turn off System Integrity Protection, follow below instructions
1) Reboot your mac and press “cmd+r” when booting up. This will cause your mac to start in recovery mode.
2) Then go into utilities > terminal.
3) Execute the command below:- csrutil disable
4) Execute the command below:- reboot