Applying style to named hooks

I'm sorry if this has already been asked (and it probably has, but I just can't find a relevant post).
I am trying (Twine 2, Harlowe 1.2.3) to apply a style to a bunch of named hooks, through a link.
Something like

This [is]<a| my [text]<a| with some [hooks]<a|.
(link: "Click!")[(prepend: ?a)[(text-style: "blur")]]

This doeasn't work, since prepend adds the given content in front of the target hook's content, not in front of the target hook itself.
Does someone know how to do that?