plymouth-update-initrd is a script that should probably be eventually dropped. It was originally created to unpack and initrd and graft plymouth in. Later, it just became a thin wrapper around mkinitrd.
These days, very few (any?) distros use mkinitrd. Change it to call dracut instead.
Relevant irc log:
319448f scripts: make plymouth-update-initrd somewhat more useful
scripts/plymouth-update-initrd | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Upstream: cgit.freedesktop.org