diff --git a/onstatic/handler.go b/onstatic/handler.go
index 0092d93..313522e 100644
--- a/onstatic/handler.go
+++ b/onstatic/handler.go
@@ -76,9 +76,10 @@ func handlePull(res http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	reponame := getHashedDirectoryName(
-		strings.TrimSpace(req.Header.Get(repoKey)),
-	)
+	reponame := strings.TrimSpace(req.Header.Get(repoKey))
+	reponame = getHashedDirectoryName(reponame)
+	branchName := strings.TrimSpace(req.Header.Get(branchKey))
+
 	repo, err := loadLocalRepository(reponame)
 	if err != nil {
 		zap.L().Error("failed to load repo", zap.Error(err))
@@ -86,7 +87,7 @@ func handlePull(res http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	if err := doGitPull(repo); err != nil {
+	if err := doGitPull(repo, branchName); err != nil {
 		zap.L().Error("failed to gitpull", zap.Error(err))
 		res.WriteHeader(http.StatusServiceUnavailable)
 		return
@@ -185,6 +186,7 @@ func hasIgnoreSuffix(p string) bool {
 const (
 	validateKey = "X-ONSTATIC-KEY"
 	repoKey     = "X-ONSTATIC-REPONAME"
+	branchKey   = "X-ONSTATIC-BRANCH-NAME"
 )
 
 func validate(res http.ResponseWriter, req *http.Request) bool {
diff --git a/onstatic/service.go b/onstatic/service.go
index b1b4b51..045462d 100644
--- a/onstatic/service.go
+++ b/onstatic/service.go
@@ -15,6 +15,7 @@ import (
 	"gopkg.in/src-d/go-billy.v4/util"
 	"gopkg.in/src-d/go-git.v4"
 	"gopkg.in/src-d/go-git.v4/config"
+	"gopkg.in/src-d/go-git.v4/plumbing"
 	"gopkg.in/src-d/go-git.v4/plumbing/cache"
 	"gopkg.in/src-d/go-git.v4/plumbing/transport/ssh"
 	"gopkg.in/src-d/go-git.v4/storage/filesystem"
@@ -190,13 +191,14 @@ func configureOriginRepository(repo *git.Repository, originURL string) error {
 		Name: originName,
 		URLs: []string{originURL},
 	})
+
 	if err != nil {
 		return failure.Wrap(err)
 	}
 	return nil
 }
 
-func doGitPull(repo *git.Repository) error {
+func doGitPull(repo *git.Repository, branchName string) error {
 	w, err := repo.Worktree()
 	if err != nil {
 		return failure.Wrap(err)
@@ -211,10 +213,17 @@ func doGitPull(repo *git.Repository) error {
 		return failure.Wrap(err)
 	}
 
-	err = w.Pull(&git.PullOptions{
+	opt := &git.PullOptions{
 		RemoteName: originName,
 		Auth:       auth,
-	})
+		Force:      true,
+	}
+
+	if branchName != "" {
+		opt.ReferenceName = plumbing.NewBranchReferenceName(branchName)
+	}
+
+	err = w.Pull(opt)
 	if err != nil {
 		return failure.Wrap(err)
 	}