diff --git a/build.gradle b/build.gradle
index 9009d2bdf..b4caf799d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -53,7 +53,7 @@ ext {
     commonsLangVersion = "3.10"
     httpclientVersion = "4.5.12"
     dataformatYamlVersion = "2.11.0"
-    jgitVersion = "5.7.0.202003110725-r"
+    jgitVersion = "5.9.0.202009080501-r"
     flexmarkVersion = "0.62.2"
     thumbnailatorVersion = "0.4.11"
     image4jVersion = "0.7zensight1"
diff --git a/src/main/java/run/halo/app/service/impl/ThemeServiceImpl.java b/src/main/java/run/halo/app/service/impl/ThemeServiceImpl.java
index b8de4630e..16fa3dc35 100644
--- a/src/main/java/run/halo/app/service/impl/ThemeServiceImpl.java
+++ b/src/main/java/run/halo/app/service/impl/ThemeServiceImpl.java
@@ -547,7 +547,10 @@ public class ThemeServiceImpl implements ThemeService {
 
             downloadZipAndUnzip(zipUrl, themeTmpPath);
 
-            return add(themeTmpPath);
+            // find root theme folder
+            Path themeRootPath = getThemeRootPath(themeTmpPath);
+            log.debug("Got theme root path: [{}]", themeRootPath);
+            return add(themeRootPath);
         } catch (IOException e) {
             throw new ServiceException("主题拉取失败 " + uri, e);
         } finally {
@@ -610,7 +613,7 @@ public class ThemeServiceImpl implements ThemeService {
         List<ThemeProperty> themeProperties = new ArrayList<>();
 
         if (releases == null) {
-            throw new ServiceException("主题拉取失败");
+            throw new ServiceException("主题拉取失败！可能原因：当前服务器无法链接到对方服务器或连接超时。");
         }
 
         releases.forEach(tagName -> {
diff --git a/src/main/java/run/halo/app/utils/FileUtils.java b/src/main/java/run/halo/app/utils/FileUtils.java
index fc7e0e342..9d106aff4 100644
--- a/src/main/java/run/halo/app/utils/FileUtils.java
+++ b/src/main/java/run/halo/app/utils/FileUtils.java
@@ -10,6 +10,7 @@ import run.halo.app.exception.ForbiddenException;
 import java.io.*;
 import java.nio.file.*;
 import java.nio.file.attribute.BasicFileAttributes;
+import java.util.Arrays;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Optional;
@@ -29,6 +30,11 @@ import java.util.zip.ZipOutputStream;
 @Slf4j
 public class FileUtils {
 
+    /**
+     * Ignored folders while finding root path.
+     */
+    private static final List<String> IGNORED_FOLDERS = Arrays.asList(".git");
+
     private FileUtils() {
     }
 
@@ -256,7 +262,12 @@ public class FileUtils {
                     return Optional.of(rootPath);
                 }
                 // add all folder into queue
-                subFolders.forEach(queue::push);
+                subFolders.forEach(e -> {
+                    // if
+                    if (!IGNORED_FOLDERS.contains(e.getFileName().toString())) {
+                        queue.push(e);
+                    }
+                });
             }
         }
         // if tests are failed completely
diff --git a/src/main/java/run/halo/app/utils/GithubUtils.java b/src/main/java/run/halo/app/utils/GithubUtils.java
index 3eb9df8de..7763f170c 100644
--- a/src/main/java/run/halo/app/utils/GithubUtils.java
+++ b/src/main/java/run/halo/app/utils/GithubUtils.java
@@ -146,7 +146,7 @@ public class GithubUtils {
         private HashMap<String, Object> result;
 
         public GithubRelease(String repoUrl, String tagName) {
-            this.repoUrl = repoUrl;
+            this.repoUrl = StringUtils.removeEndIgnoreCase(repoUrl, ".git");
             this.tagName = tagName;
             result = null;
         }
@@ -206,8 +206,7 @@ public class GithubUtils {
         private List<String> result;
 
         public GithubReleases(String repoUrl) {
-            this.repoUrl = repoUrl;
-            result = null;
+            this.repoUrl = StringUtils.removeEndIgnoreCase(repoUrl, ".git");
         }
 
         @Override
@@ -261,7 +260,7 @@ public class GithubUtils {
         private HashMap<String, Object> result;
 
         public GithubLatestRelease(String repoUrl) {
-            this.repoUrl = repoUrl;
+            this.repoUrl = StringUtils.removeEndIgnoreCase(repoUrl, ".git");
             result = null;
         }
 
@@ -323,7 +322,7 @@ public class GithubUtils {
         private String result;
 
         public GithubFile(String repoUrl, String branch) {
-            this.repoUrl = repoUrl;
+            this.repoUrl = StringUtils.removeEndIgnoreCase(repoUrl, ".git");
             this.branch = branch;
             result = null;
         }
diff --git a/src/test/java/run/halo/app/utils/FileUtilsTest.java b/src/test/java/run/halo/app/utils/FileUtilsTest.java
index e2c2883ec..782356332 100644
--- a/src/test/java/run/halo/app/utils/FileUtilsTest.java
+++ b/src/test/java/run/halo/app/utils/FileUtilsTest.java
@@ -203,7 +203,7 @@ class FileUtilsTest {
         // folder2
         //   file2
         //   folder3
-        //     file3
+        //     expected_file
         // expected: folder2
         tempDirectory = Files.createTempDirectory("halo-test");
 
@@ -218,13 +218,52 @@ class FileUtilsTest {
         Files.createFile(file2);
         Path folder3 = folder2.resolve("folder3");
         Files.createDirectory(folder3);
+        Path expectedFile = folder3.resolve("expected_file");
+        Files.createFile(expectedFile);
+        log.info("Prepared test folder structure");
+
+        // find the root folder where expected file locates, and we expect folder3
+        Optional<Path> rootPath = FileUtils.findRootPath(tempDirectory, path -> path.getFileName().toString().equals("expected_file"));
+        assertTrue(rootPath.isPresent());
+        assertEquals(folder3.toString(), rootPath.get().toString());
+    }
+
+
+    @Test
+    void findRootPathIgnoreTest() throws IOException {
+        // build folder structure
+        // folder1
+        // .git
+        //   expected_file
+        // file1
+        // folder2
+        //   file2
+        //   folder3
+        //     file3
+        // expected: folder2
+        tempDirectory = Files.createTempDirectory("halo-test");
+
+        log.info("Preparing test folder structure");
+        Path folder1 = tempDirectory.resolve("folder1");
+        Files.createDirectory(folder1);
+        Path dotGit = tempDirectory.resolve(".git");
+        Files.createDirectory(dotGit);
+        Path expectedFile = dotGit.resolve("expected_file");
+        Files.createFile(expectedFile);
+        Path file1 = tempDirectory.resolve("file1");
+        Files.createFile(file1);
+        Path folder2 = tempDirectory.resolve("folder2");
+        Files.createDirectory(folder2);
+        Path file2 = folder2.resolve("file2");
+        Files.createFile(file2);
+        Path folder3 = folder2.resolve("folder3");
+        Files.createDirectory(folder3);
         Path file3 = folder3.resolve("file3");
         Files.createFile(file3);
         log.info("Prepared test folder structure");
 
         // find the root folder where file3 locates, and we expect folder3
-        Optional<Path> rootPath = FileUtils.findRootPath(tempDirectory, path -> path.getFileName().toString().equals("file3"));
-        assertTrue(rootPath.isPresent());
-        assertEquals(folder3.toString(), rootPath.get().toString());
+        Optional<Path> rootPath = FileUtils.findRootPath(tempDirectory, path -> path.getFileName().toString().equals("expected_file"));
+        assertFalse(rootPath.isPresent());
     }
 }
\ No newline at end of file