For example to view mcgrof's results of testing XFS on linux-next tag next-20230725 on a libvirt setup you can use:
tar -tOJf workflows/fstests/results/archive/mcgrof/xfs/libvirt-qemu/20230727/6.5.0-rc3-next-20230725.xz
For example to see all generic/175 failures:
tar -tOJf workflows/fstests/results/archive/mcgrof/xfs/libvirt-qemu/20230727/6.5.0-rc3-next-20230725.xz 2>&1 | grep generic | grep 175
6.5.0-rc3-next-20230725/xfs_reflink_normapbt/generic/175.out.bad
6.5.0-rc3-next-20230725/xfs_reflink_normapbt/generic/175.full
6.5.0-rc3-next-20230725/xfs_reflink_normapbt/generic/175.dmesg
6.5.0-rc3-next-20230725/xfs_reflink/generic/175.out.bad
6.5.0-rc3-next-20230725/xfs_reflink/generic/175.full
6.5.0-rc3-next-20230725/xfs_reflink/generic/175.dmesg
6.5.0-rc3-next-20230725/xfs_reflink_4k/generic/175.out.bad
6.5.0-rc3-next-20230725/xfs_reflink_4k/generic/175.full
6.5.0-rc3-next-20230725/xfs_reflink_4k/generic/175.dmesg
6.5.0-rc3-next-20230725/xfs_rtdev/generic/175.out.bad
6.5.0-rc3-next-20230725/xfs_rtdev/generic/175.full
6.5.0-rc3-next-20230725/xfs_rtdev/generic/175.dmesg
tar -xOJf workflows/fstests/results/archive/mcgrof/xfs/libvirt-qemu/20230727/6.5.0-rc3-next-20230725.xz 6.5.0-rc3-next-20230725/xfs_reflink_normapbt/generic/175.out.bad
tar -xOJf workflows/fstests/results/archive/mcgrof/xfs/libvirt-qemu/20230727/6.5.0-rc3-next-20230725.xz 6.5.0-rc3-next-20230725/xfs_reflink_normapbt/generic/175.dmesg