internal/pkg: pass context in request wrapper

This method is for the most common use case, and in actual use there will always be an associated context.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pkg/net.go

@@ -1,6 +1,7 @@
 package pkg
 
 import (
+	"context"
 	"crypto/sha512"
 	"errors"
 	"io"
@@ -45,8 +46,13 @@ func (c *Cache) NewHTTP(hc *http.Client, req *http.Request, checksum Checksum) F
 
 // NewHTTPGet returns a new [File] backed by the supplied client. A GET request
 // is set up for url. If c is nil, [http.DefaultClient] is used instead.
-func (c *Cache) NewHTTPGet(hc *http.Client, url string, checksum Checksum) (File, error) {
-	req, err := http.NewRequest(http.MethodGet, url, nil)
+func (c *Cache) NewHTTPGet(
+	ctx context.Context,
+	hc *http.Client,
+	url string,
+	checksum Checksum,
+) (File, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return nil, err
 	}