cmd/dist: fix bootstrap failure when GOHOSTARCH is set
cmd/dist: fix bootstrap failure when GOHOSTARCH is set

Fixes #33977

Change-Id: I4b136788f08b08c53087af8d3cd56125e620b51b
Reviewed-on: https://go-review.googlesource.com/c/go/+/197602
Run-TryBot: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Cherry Zhang <d62e63aa42ce272d7b6a5055d97e942b33a34679@google.com>

CAFxX/go,CAFxX/go,akutz/go,CAFxX/go,golang/go,akutz/go,cloudflare/go,akutz/go,akutz/go,CAFxX/go,nawawi/go,CAFxX/go,golang/go,nawawi/go,akutz/go,akutz/go,cloudflare/go,cloudflare/go,cloudflare/go,nawawi/go,golang/go,cloudflare/go,akutz/go,nawawi/go,golang/go,nawawi/go,cloudflare/go,nawawi/go,CAFxX/go,CAFxX/go,nawawi/go,golang/go,cloudflare/go,golang/go,akutz/go,cloudflare/go,CAFxX/go,golang/go,nawawi/go,golang/go