Comment 6 for bug 1888543

Verified on Focal with 1:1.30.1-4ubuntu6.3:

ubuntu@ff:~$ dpkg -l busybox-static | cat
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-===================-============-======================================================
ii busybox-static 1:1.30.1-4ubuntu6.2 amd64 Standalone rescue shell with tons of builtin utilities
ubuntu@ff:~$ sudo busybox hwclock -s
hwclock: settimeofday: Invalid argument
ubuntu@ff:~$ sudo apt install busybox-static
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
  busybox-static
1 upgraded, 0 newly installed, 0 to remove and 15 not upgraded.
Need to get 949 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu focal-proposed/main amd64 busybox-static amd64 1:1.30.1-4ubuntu6.3 [949 kB]
Fetched 949 kB in 1s (1849 kB/s)
(Reading database ... 63419 files and directories currently installed.)
Preparing to unpack .../busybox-static_1%3a1.30.1-4ubuntu6.3_amd64.deb ...
Unpacking busybox-static (1:1.30.1-4ubuntu6.3) over (1:1.30.1-4ubuntu6.2) ...
Setting up busybox-static (1:1.30.1-4ubuntu6.3) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for initramfs-tools (0.136ubuntu6.3) ...
update-initramfs: Generating /boot/initrd.img-5.4.0-54-generic
ubuntu@ff:~$ sudo busybox hwclock -s
ubuntu@ff:~$