hack: fragile awk pipeline used to read GOARCH in install.sh

[Ankitsinghsisodya]

Problem

hack/install.sh line 33 reads the Go architecture with:

KO_ARCH=$(go env | grep GOARCH | awk -F\' '{print $2}')

This is fragile because:

• It pipes through three commands instead of one
• It depends on the exact string format of go env output (using single-quote delimiters), which is an implementation detail that can change

Proposed Fix

Use the canonical single-variable form:

KO_ARCH=$(go env GOARCH)

go env <VAR> is the documented, stable way to read one environment variable and outputs just the value with no surrounding quotes.

[Ankitsinghsisodya]

/assign