From 929b8444e41084541d7f439f4eaa4f7ce6d13100 Mon Sep 17 00:00:00 2001
From: Tasos Maschalidis <info@tashows.com>
Date: Wed, 1 Oct 2025 00:27:08 +0300
Subject: [PATCH] Add helper functions isBareGitRepo and checkoutBareGitRepo

---
 plugins/buildpacks/functions.go | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/plugins/buildpacks/functions.go b/plugins/buildpacks/functions.go
index f3545233e..0252e239e 100644
--- a/plugins/buildpacks/functions.go
+++ b/plugins/buildpacks/functions.go
@@ -63,3 +63,31 @@ func validBuildpackURL(buildpack string) (string, error) {
 
 	return buildpack, fmt.Errorf("Invalid buildpack specified: %v", buildpack)
 }
+
+func isBareGitRepo(directory string) bool {
+	headFile := filepath.Join(directory, "HEAD")
+	objectsDir := filepath.Join(directory, "objects")
+	if common.FileExists(headFile) && common.DirectoryExists(objectsDir) {
+		return true
+	}
+	return false
+}
+
+func checkoutBareGitRepo(sourceWorkDir string) (string, error) {
+	tmpdir, err := os.MkdirTemp("", "bare-git-checkout")
+	if err != nil {
+		return "", fmt.Errorf("Unable to create temporary directory: %s", err.Error())
+	}
+
+	result, err := common.CallExecCommand(common.ExecCommandInput{
+		Command: "git",
+		Args:    []string{"--git-dir=" + sourceWorkDir, "--work-tree=" + tmpdir, "checkout", "-f"},
+	})
+
+	if err != nil {
+		os.RemoveAll(tmpdir)
+		return "", fmt.Errorf("Unable to checkout bare git repository: %s", result.StderrContents())
+	}
+
+	return tmpdir, nil
+}