$ git clone -n https://src.fedoraproject.org/rpms/startup-notification.git /var/lib/mock/f40-build-767478-124714/root/chroot_tmpdir/scmroot/startup-notification
Cloning into '/var/lib/mock/f40-build-767478-124714/root/chroot_tmpdir/scmroot/startup-notification'...
$ git fetch origin f439d4fcf1eb0d33672161e79d5a6f281fab5711:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/startup-notification
 * [new ref]         f439d4fcf1eb0d33672161e79d5a6f281fab5711 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f439d4f Fix a typo in -27 which made it uninstallable (missing %)