There's a large amount of space used on fedorapeople.org
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/GuestVolGroup00-project 342G 328G 15G 96% /project
This includes /project/repos/ (which is https://repos.fedorapeople.org
Please take a few minutes to look at any files you or your group may
have there and delete anything you no longer need.
You may also want to look at your /home directories on fedorapeople.org
and clean up any unneeded files there as well.