Eschwartz [1] filed a deletion request for bash-nosh [2]:

Frivolous duplicate of core/bash removing the /bin/sh symlink in favor
of the one installed by the frivolous "dash-sh" package.

[1] https://aur.archlinux.org/account/Eschwartz/
[2] https://aur.archlinux.org/pkgbase/bash-nosh/