Bucky was...surprised. He hadn't thought he'd be able to pass as his other self well enough to go unnoticed by anyone who lived in this station. The missing arm being most obvious, but also the fact that the version of him here was clearly healthier and less emaciated. But maybe he wasn't known to everyone that well. Or maybe there was another of him, one that was missing the arm too.
"Just... doing some laundry." He improvised, trying to sound friendly despite the rasp in his voice. "Easier to carry this way." He motioned a little with the stump of what had once been his left arm, the mangled scar visible briefly. "Just getting some breakfast first."