cmd/cgo: does not compile for iOS simulator arm64

What version of Go are you using (go version)?

Does this issue reproduce with the latest release?

I am using the latest release

What operating system and processor architecture are you using (go env)?

What did you do?

I am trying to compile a go project to iOS c libraries and then create a xcframework out of those libraries. This works great for iOS arm64 and simulator x86. However, when I try to compile for simulator arm64 I encounter problems. The library built for arm64 simulator seems to not target the simulator but a real iOS device. This is problematic for using the simulator on new apple silicone devices. I compiled using this command

ios-arm64:
	cd kagome; \
	CGO_ENABLED=1 \
	GOOS=darwin \
	GOARCH=arm64 \
	SDK=iphoneos \
	CC=$(PWD)/clangwrap.sh \
	CGO_CFLAGS="-fembed-bitcode" \
	go build -buildmode=c-archive -o ../$(OUT)/ios/kagome_dart_ios_arm64.a kagome.go

simulator-arm64:
	cd kagome; \
	CGO_ENABLED=1 \
	GOOS=darwin \
	GOARCH=arm64 \
	SDK=iphonesimulator \
	CGO_CFLAGS="-fembed-bitcode" \
	CC=$(PWD)/clangwrap.sh \
	go build -buildmode=c-archive -o ../$(OUT)/ios/kagome_dart_simulator_arm64.a kagome.go

and this is the clangwrap.sh

#!/bin/sh

# go/clangwrap.sh

SDK_PATH=`xcrun --sdk $SDK --show-sdk-path`
CLANG=`xcrun --sdk $SDK --find clang`

if [ "$GOARCH" == "amd64" ]; then
    CARCH="x86_64"
elif [ "$GOARCH" == "arm64" ]; then
    CARCH="arm64"
fi

exec $CLANG -arch $CARCH -isysroot $SDK_PATH -mios-version-min=10.0 "$@"

When now creating a xcframework

xcodebuild -create-xcframework \
		-library $(OUT)/ios/kagome_dart_simulator_arm64.a \
		-library $(OUT)/ios/kagome_dart_ios_arm64.a \
		-output  $(OUT)/ios/kagome_dart.xcframework

the error is

A library with the identifier 'ios-arm64' already exists.

What did you expect to see?

I expected the library to be built for an arm64 simulator.

What did you see instead?

The library was built for an arm64 iOS device.