diff --git a/lib/modules/manager/terragrunt/__fixtures__/2.hcl b/lib/modules/manager/terragrunt/__fixtures__/2.hcl
index ac753da5b3a8ac..523dd78b898881 100644
--- a/lib/modules/manager/terragrunt/__fixtures__/2.hcl
+++ b/lib/modules/manager/terragrunt/__fixtures__/2.hcl
@@ -182,7 +182,7 @@ terraform {
 
 # gitlab-tags ssh with custom port
 terraform {
-  source = "git::ssh://gitlab.com:1234/hashicorp/example.git?ref=v1.0.2"
+  source = "git::ssh://gitlab.com:1234/hashicorp/example.git//foo/bar?ref=v1.0.2"
 }
 
 # gitea-tags
diff --git a/lib/modules/manager/terragrunt/__fixtures__/3.hcl b/lib/modules/manager/terragrunt/__fixtures__/3.hcl
index b33f8d4fedfc02..24e81c345cfc7b 100644
--- a/lib/modules/manager/terragrunt/__fixtures__/3.hcl
+++ b/lib/modules/manager/terragrunt/__fixtures__/3.hcl
@@ -182,7 +182,7 @@ terraform {
 
 # gitlab-tags ssh with custom port
 terraform {
-  source = "git::ssh://gitlab.com:1234/hashicorp/example.git?ref=v1.0.2"
+  source = "git::ssh://gitlab.com:1234/hashicorp/example.git//foo/bar?ref=v1.0.2"
 }
 
 # gitea-tags
diff --git a/lib/modules/manager/terragrunt/__fixtures__/4.hcl b/lib/modules/manager/terragrunt/__fixtures__/4.hcl
index 42a0a46e47944d..8ac54753fe0d21 100644
--- a/lib/modules/manager/terragrunt/__fixtures__/4.hcl
+++ b/lib/modules/manager/terragrunt/__fixtures__/4.hcl
@@ -183,7 +183,7 @@ terraform {
 
 # gitlab-tags ssh with custom port
 terraform {
-  source = "git::ssh://gitlab.com:1234/hashicorp/example.git?ref=v1.0.2"
+  source = "git::ssh://gitlab.com:1234/hashicorp/example.git//foo/bar?ref=v1.0.2"
 }
 
 # gitea-tags
diff --git a/lib/modules/manager/terragrunt/modules.ts b/lib/modules/manager/terragrunt/modules.ts
index 665966c0295689..9d71e1e8aa6483 100644
--- a/lib/modules/manager/terragrunt/modules.ts
+++ b/lib/modules/manager/terragrunt/modules.ts
@@ -75,8 +75,12 @@ export function analyseTerragruntModule(
       logger.debug('Terragrunt module contains subdirectory');
     }
     dep.depType = 'gitTags';
-    // We don't want to have .git or subdirectory in the depName
-    dep.depName = `${hostname}${pathname.split('//')[0].replace(regEx('.git$'), '')}`;
+    // We don't want to have leading slash, .git or subdirectory in the repository path
+    const repositoryPath = pathname
+      .replace(regEx(/^\//), '')
+      .split('//')[0]
+      .replace(regEx('.git$'), '');
+    dep.depName = `${hostname}/${repositoryPath}`;
     dep.currentValue = tag;
     dep.datasource = detectGitTagDatasource(url);
     if (dep.datasource === GitTagsDatasource.id) {
@@ -87,10 +91,7 @@ export function analyseTerragruntModule(
       }
     } else {
       // The packageName should only contain the path to the repository
-      dep.packageName = pathname
-        .replace(regEx(/^\//), '')
-        .replace(regEx('.git$'), '')
-        .split('//')[0];
+      dep.packageName = repositoryPath;
       dep.registryUrls = [
         protocol === 'https:' ? `https://${host}` : `https://${hostname}`,
       ];