Yeah, don't take it personal (his hissing), lol. He's just scared, & snakes don't understand why or how their familiar world has changed when they moved in with us- it takes time for them to feel safe in their new home, + being observed by some huge monster (us, lol), & being in shed on top of that...
well, you get the idea. You'll both get beyond this- be patient. You'd be scared too, if you were in his place.
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