diff --git a/src/pkg/reg/adapter/gitlab/adapter.go b/src/pkg/reg/adapter/gitlab/adapter.go
index bd9db8bb3f8..50ca83cbc17 100644
--- a/src/pkg/reg/adapter/gitlab/adapter.go
+++ b/src/pkg/reg/adapter/gitlab/adapter.go
@@ -114,6 +114,7 @@ func (a *adapter) FetchArtifacts(filters []*model.Filter) ([]*model.Resource, er
 	} else {
 		pathPatterns = append(pathPatterns, nameFilter)
 	}
+	log.Debugf("Patterns: %v", pathPatterns)
 
 	for _, project := range projects {
 		if !project.RegistryEnabled {
@@ -130,8 +131,10 @@ func (a *adapter) FetchArtifacts(filters []*model.Filter) ([]*model.Resource, er
 		}
 		for _, repository := range repositories {
 			if !existPatterns(repository.Path, pathPatterns) {
+				log.Debugf("Skipping repository path=%s and id=%d", repository.Path, repository.ID)
 				continue
 			}
+			log.Debugf("Search tags repository path=%s and id=%d", repository.Path, repository.ID)
 			vTags, err := a.clientGitlabAPI.getTags(project.ID, repository.ID)
 			if err != nil {
 				return nil, err
diff --git a/src/pkg/reg/adapter/gitlab/client.go b/src/pkg/reg/adapter/gitlab/client.go
index 82eb3a54031..d4bc6dff37f 100644
--- a/src/pkg/reg/adapter/gitlab/client.go
+++ b/src/pkg/reg/adapter/gitlab/client.go
@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"github.com/goharbor/harbor/src/lib/log"
 	"io"
 	"net/http"
 	"net/url"
@@ -80,6 +81,7 @@ func (c *Client) getRepositories(projectID int64) ([]*Repository, error) {
 	if err := c.GetAndIteratePagination(urlAPI, &repositories); err != nil {
 		return nil, err
 	}
+	log.Debugf("Count repositories %d in project %d", len(repositories), projectID)
 	return repositories, nil
 }
 
@@ -89,6 +91,7 @@ func (c *Client) getTags(projectID int64, repositoryID int64) ([]*Tag, error) {
 	if err := c.GetAndIteratePagination(urlAPI, &tags); err != nil {
 		return nil, err
 	}
+	log.Debugf("Count tags %d in repository %d, and project  %d", len(tags), repositoryID, projectID)
 	return tags, nil
 }
 
@@ -99,7 +102,6 @@ func (c *Client) GetAndIteratePagination(endpoint string, v interface{}) error {
 	if err != nil {
 		return err
 	}
-
 	rv := reflect.ValueOf(v)
 	if rv.Kind() != reflect.Ptr {
 		return errors.New("v should be a pointer to a slice")
@@ -108,7 +110,7 @@ func (c *Client) GetAndIteratePagination(endpoint string, v interface{}) error {
 	if elemType.Kind() != reflect.Slice {
 		return errors.New("v should be a pointer to a slice")
 	}
-
+	log.Debugf("Gitlab request %s", urlAPI)
 	resources := reflect.Indirect(reflect.New(elemType))
 	for len(endpoint) > 0 {
 		req, err := c.newRequest(http.MethodGet, endpoint, nil)