Can I easily force fsck on separate sysv ext4 /home ?

Just finished building LFS and my idea of minimal BLFS (nfs, git,
yadda, yadda) for a desktop system.  Something among the (desktop)
BLFS packages keeps /dev mounted which prevents me cleanly
unmounting.  Seen that in a native build, in that case there seemed
to be a lot of damage to the new filesystem (/etc, /var).

On this occasion I'm fairly sure the new system (for a different
machine) is ok, but /home (nvme0n1p2) got shared (my problem).  When
I mounted the new system at /mnt/lfs it reported it was replaying
the journal for nvme0n1p2, then discarded orphaned inodes.

But, trying to be cautious, I'd like to do a forced fsck of it.

The current rootfs was fsck'd during boot, but I cannot see any
obvious way to force fsck for other filesystems before mounting them
?  And I'm not sure that even the rootfs had a full fsck -f.

For those who don't read the title, this is sysvinit (and approx
LFS-12.3).

ĸen
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