# uname -r
5.15.16-gentoo-x86_64

# qlist -ICv gentoo-source
sys-kernel/gentoo-sources-5.16.2
sys-kernel/gentoo-sources-5.15.16

# cl-update
Repositories synchronization
 * Checking current binhost ...                                                                                                 [ ok ]
 * Checking Distros updates ...                                                                                                 [ ok ]
 * Checking Calculate updates ...                                                                                               [ ok ]
 * Checking Gentoo updates ...                                                                                                  [ ok ]
 * Synchronization finished
System configuration
 * Update server https://mirror.iscas.ac.cn/calculate
Updating packages
 * Calculating dependencies ...
 * Listing packages for installation
 * Full sources including the Gentoo patchset for the 5.16 kernel tree (NS) sys-kernel/gentoo-sources-5.16.2 (120260 KiB)
 * 1 packages will be installed, 120260 KiB will be downloaded

Would you like to merge these packages? (Yes/No): Yes
 * (1 of 1) Full sources including the Gentoo patchset for the 5.16 kernel tree
 * Emerging sys-kernel/gentoo-sources-5.16.2 ...                                                                                [ ok ]
 * Installing sys-kernel/gentoo-sources-5.16.2 [5.15.16] ...                                                                    [ ok ]
Cleaning the system from needless packages
 * Calculating dependencies ...                                                                                                 [ ok ]
Rebuilding dependent modules
 * Updating Kernel modules ...                                                                                                  [ ok ]
 * (1 of 1) Linux ZFS kernel module for sys-fs/zfs
 * Emerging sys-fs/zfs-kmod-2.1.2 -