Click my name to see what I take - I have a gear list linked.

Basically I take one set of convertible pants, long underwear, poly T shirt, wool shirts and a fleece, along with two sets of socks. I typically take the pants off and change socks to sleep, then change back to hike. I certainly don't carry a set of clothing for each day.

I will take a dip if the opportunity presents itself to clean off, or a "sponge bath" with
camp suds in a 3 cup pot with a liner sock as a washcloth every 2 or 3 days if I don't
have any other opportunity to wash myself - While my wife objects to my smell when I
get home it's not that bad if I keep myself reasonably clean.

OTOH you will be on a work crew - which *may* have different requirements than for hiking, so you should probably ask if you need anything specialized - the last time I saw a trail crew here they were required to have safety (steel toe) boots and chainsaw chaps, but I'm a long
way from the AT - You may want to ask them beforehand to see if they have particular requirements/reccomendations for what you should bring.