diff --git a/daemon/repo-mgr.c b/daemon/repo-mgr.c
index aa269d5b6..9385248c0 100644
--- a/daemon/repo-mgr.c
+++ b/daemon/repo-mgr.c
@@ -865,13 +865,13 @@ static int
 scan_worktree_for_changes (struct index_state *istate, SeafRepo *repo,
                            SeafileCrypt *crypt, GList *ignore_list)
 {
+    remove_deleted (istate, repo->worktree, "", ignore_list, NULL);
+
     if (add_recursive (repo->id, repo->version, repo->email,
                        istate, repo->worktree, "", crypt, FALSE, ignore_list,
                        NULL, NULL, NULL) < 0)
         return -1;
 
-    remove_deleted (istate, repo->worktree, "", ignore_list, NULL);
-
     return 0;
 }
 
@@ -1406,7 +1406,7 @@ handle_unmerged_index_entries (SeafRepo *repo, struct index_state *istate,
 
 static int
 index_add (SeafRepo *repo, struct index_state *istate,
-           gboolean is_initial_commit, gboolean handle_unmerged)
+           gboolean is_force_commit, gboolean handle_unmerged)
 {
     SeafileCrypt *crypt = NULL;
     GList *ignore_list = NULL;
@@ -1418,8 +1418,13 @@ index_add (SeafRepo *repo, struct index_state *istate,
 
     ignore_list = seaf_repo_load_ignore_files (repo->worktree);
 
-    if (apply_worktree_changes_to_index (repo, istate, crypt, ignore_list) < 0) {
-        seaf_warning ("Failed to apply worktree changes to index.\n");
+    if (!is_force_commit) {
+        if (apply_worktree_changes_to_index (repo, istate, crypt, ignore_list) < 0) {
+            seaf_warning ("Failed to apply worktree changes to index.\n");
+            ret = -1;
+        }
+    } else if (scan_worktree_for_changes (istate, repo, crypt, ignore_list) < 0) {
+        seaf_warning ("Failed to scan worktree for changes.\n");
         ret = -1;
     }
 
@@ -1755,7 +1760,7 @@ print_index (struct index_state *istate)
 }
 
 char *
-seaf_repo_index_commit (SeafRepo *repo, const char *desc, gboolean is_initial_commit,
+seaf_repo_index_commit (SeafRepo *repo, const char *desc, gboolean is_force_commit,
                         GError **error)
 {
     SeafRepoManager *mgr = repo->manager;
@@ -1779,7 +1784,7 @@ seaf_repo_index_commit (SeafRepo *repo, const char *desc, gboolean is_initial_co
     if (need_handle_unmerged_index (repo, &istate))
         unmerged = TRUE;
 
-    if (index_add (repo, &istate, is_initial_commit, unmerged) < 0) {
+    if (index_add (repo, &istate, is_force_commit, unmerged) < 0) {
         g_set_error (error, SEAFILE_DOMAIN, SEAF_ERR_GENERAL, "Failed to add");
         goto error;
     }
diff --git a/daemon/sync-mgr.c b/daemon/sync-mgr.c
index 410e4e711..ac49679d0 100644
--- a/daemon/sync-mgr.c
+++ b/daemon/sync-mgr.c
@@ -90,6 +90,9 @@ has_old_commits_to_upload (SeafRepo *repo);
 static int
 sync_repo_v2 (SeafSyncManager *manager, SeafRepo *repo, gboolean is_manual_sync);
 
+static gboolean
+check_http_protocol (SeafSyncManager *mgr, SeafRepo *repo, gboolean *is_checking);
+
 SeafSyncManager*
 seaf_sync_manager_new (SeafileSession *seaf)
 {
@@ -393,6 +396,19 @@ seaf_sync_manager_add_sync_task (SeafSyncManager *mgr,
         return -1;
     }
 
+    SyncInfo *info = get_sync_info (mgr, repo->id);
+
+    if (info->in_sync)
+        return 0;
+
+    gboolean is_checking_http = FALSE;
+    if (seaf->enable_http_sync && repo->version > 0) {
+        if (check_http_protocol (mgr, repo, &is_checking_http)) {
+            sync_repo_v2 (mgr, repo, TRUE);
+            return 0;
+        }
+    }
+
     /* If relay is not ready or protocol version is not determined,
      * need to wait.
      */
@@ -402,11 +418,6 @@ seaf_sync_manager_add_sync_task (SeafSyncManager *mgr,
         return 0;
     }
 
-    SyncInfo *info = get_sync_info (mgr, repo->id);
-
-    if (info->in_sync)
-        return 0;
-
     ServerState *state = g_hash_table_lookup (mgr->server_states,
                                               repo->relay_id);
 
@@ -1515,7 +1526,7 @@ commit_job (void *vtask)
     res->changed = TRUE;
     res->success = TRUE;
 
-    char *commit_id = seaf_repo_index_commit (repo, "", task->is_initial_commit,
+    char *commit_id = seaf_repo_index_commit (repo, "", task->is_manual_sync,
                                               &error);
     if (commit_id == NULL && error != NULL) {
         seaf_warning ("[Sync mgr] Failed to commit to repo %s(%.8s).\n",
@@ -1842,6 +1853,10 @@ sync_repo_v2 (SeafSyncManager *manager, SeafRepo *repo, gboolean is_manual_sync)
             * but it's before 30-second schedule.
             */
             goto out;
+        } else if (is_manual_sync) {
+            task = create_sync_task_v2 (manager, repo, is_manual_sync, FALSE);
+            commit_repo (task);
+            goto out;
         } else if (create_commit_from_event_queue (manager, repo, is_manual_sync))
             goto out;
     }