chore: import upstream snapshot with attribution

analysis/git.go

@@ -0,0 +1,18 @@
+//go:build ignore
+
+package gorules
+
+import "github.com/quasilyte/go-ruleguard/dsl"
+
+// inMemoryCloneWithWorktree flags git clone calls that use memory.NewStorage() as
+// the storer while also writing files to a real worktree. This holds all git objects
+// in heap for the duration of the clone, which is unbounded for user-supplied repos.
+func inMemoryCloneWithWorktree(m dsl.Matcher) {
+	m.Match(`git.CloneContext($_, memory.NewStorage(), $wt, $_)`).
+		Where(m["wt"].Text != "nil").
+		Report(`git.CloneContext with memory.NewStorage() holds all git objects in heap; use gogitfs.NewStorage with a filesystem storer instead`)
+
+	m.Match(`git.Clone(memory.NewStorage(), $wt, $_)`).
+		Where(m["wt"].Text != "nil").
+		Report(`git.Clone with memory.NewStorage() holds all git objects in heap; use gogitfs.NewStorage with a filesystem storer instead`)
+}