$ git clone -n https://src.fedoraproject.org/rpms/kf6-kwindowsystem.git /var/lib/mock/f40-build-2296639-56404/root/chroot_tmpdir/scmroot/kf6-kwindowsystem
Cloning into '/var/lib/mock/f40-build-2296639-56404/root/chroot_tmpdir/scmroot/kf6-kwindowsystem'...
$ git fetch origin 0fe0047b18da560bd4efb34b9d17ba3708973fb1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kwindowsystem
 * [new ref]         0fe0047b18da560bd4efb34b9d17ba3708973fb1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fe0047 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild