Digging, so to speak (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">digging so to speak</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for into that I've seen before include "Keen on, colloquially" , "Knowledgeable about" , "Curious about" , "Taking an active and lively interest (in something)" , "Showing enthusiasm for" .)