internal/rosa/git: git clone helper

For obtaining sources of projects that stubbornly refuse to provide release tarballs.

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

internal/rosa/git.go

@@ -76,3 +76,26 @@ make \
 	)
 }
 func init() { artifactsF[Git] = Toolchain.newGit }
+
+// NewViaGit returns a [pkg.Artifact] for cloning a git repository.
+func (t Toolchain) NewViaGit(
+	name, url, rev string,
+	checksum pkg.Checksum,
+) pkg.Artifact {
+	return t.New(name+"-"+rev, 0, []pkg.Artifact{
+		t.Load(NSSCACert),
+		t.Load(OpenSSL),
+		t.Load(Libpsl),
+		t.Load(Curl),
+		t.Load(Libexpat),
+		t.Load(Git),
+	}, &checksum, nil, `
+git \
+	-c advice.detachedHead=false \
+	clone \
+	--revision=`+rev+` \
+	`+url+` \
+	/work
+rm -rf /work/.git
+`, resolvconf())
+}