Matr1x-101  filed an orphan request for gnome-shell-extension- coverflow-alt-tab-git :
The owner has been unreponsive and has not fixed the issue that this package has. I have tried contacting the email on numerous occasions to no avail. They seem not to be active on the AUR as well.
Request #37180 has been Rejected by yan12125 :
The package is updated.