diff --git a/shared/build/repo/repo.go b/shared/build/repo/repo.go
index 01daa073c..355b93ab9 100644
--- a/shared/build/repo/repo.go
+++ b/shared/build/repo/repo.go
@@ -114,7 +114,7 @@ func (r *Repo) Commands() []string {
 	cmds := []string{}
 	if len(r.PR) > 0 {
 		// If a specific PR is provided then we need to clone it.
-		cmds = append(cmds, fmt.Sprintf("git clone --depth=%d --recursive %s %s", r.Depth, r.Path, r.Dir))
+		cmds = append(cmds, fmt.Sprintf("git clone --depth=%d --recursive --branch=%s %s %s", r.Depth, branch, r.Path, r.Dir))
 		cmds = append(cmds, fmt.Sprintf("git fetch origin +refs/pull/%s/head:refs/remotes/origin/pr/%s", r.PR, r.PR))
 		cmds = append(cmds, fmt.Sprintf("git checkout -qf -b pr/%s origin/pr/%s", r.PR, r.PR))
 	} else {