diff --git a/gix/src/open/repository.rs b/gix/src/open/repository.rs
index 25a8af99453..1b367497ffa 100644
--- a/gix/src/open/repository.rs
+++ b/gix/src/open/repository.rs
@@ -1,4 +1,9 @@
 #![allow(clippy::result_large_err)]
+use gix_config::file::Metadata;
+use gix_features::threading::OwnShared;
+use gix_object::bstr::ByteSlice;
+use gix_path::RelativePath;
+use std::path::Path;
 use std::{
     borrow::Cow,
     collections::{btree_map::Entry, BTreeMap},
@@ -6,10 +11,6 @@ use std::{
     path::PathBuf,
 };
 
-use gix_features::threading::OwnShared;
-use gix_object::bstr::ByteSlice;
-use gix_path::RelativePath;
-
 use super::{Error, Options};
 use crate::{
     bstr::BString,
@@ -257,26 +258,32 @@ impl ThreadSafeRepository {
         // core.worktree might be used to overwrite the worktree directory
         if !config.is_bare {
             let mut key_source = None;
+            fn assure_config_is_from_current_repo(
+                section: &gix_config::file::Metadata,
+                git_dir: &Path,
+                current_dir: &Path,
+                filter_config_section: &mut fn(&Metadata) -> bool,
+            ) -> bool {
+                if !filter_config_section(section) {
+                    return false;
+                }
+                // ignore worktree settings that aren't from our repository. This can happen
+                // with worktrees of submodules for instance.
+                section
+                    .path
+                    .as_deref()
+                    .and_then(|p| gix_path::normalize(p.into(), current_dir))
+                    .is_some_and(|config_path| config_path.starts_with(git_dir))
+            }
             let worktree_path = config
                 .resolved
-                .path_filter(Core::WORKTREE, {
-                    |section| {
-                        if !filter_config_section(section) {
-                            return false;
-                        }
-                        // ignore worktree settings that aren't from our repository. This can happen
-                        // with worktrees of submodules for instance.
-                        let is_config_in_our_repo = section
-                            .path
-                            .as_deref()
-                            .and_then(|p| gix_path::normalize(p.into(), current_dir))
-                            .is_some_and(|config_path| config_path.starts_with(&git_dir));
-                        if !is_config_in_our_repo {
-                            return false;
-                        }
+                .path_filter(Core::WORKTREE, |section| {
+                    let res =
+                        assure_config_is_from_current_repo(section, &git_dir, current_dir, &mut filter_config_section);
+                    if res {
                         key_source = Some(section.source);
-                        true
                     }
+                    res
                 })
                 .zip(key_source);
             if let Some((wt, key_source)) = worktree_path {
@@ -302,7 +309,9 @@ impl ThreadSafeRepository {
             } else if !config.lenient_config
                 && config
                     .resolved
-                    .boolean_filter(Core::WORKTREE, &mut filter_config_section)
+                    .boolean_filter(Core::WORKTREE, |section| {
+                        assure_config_is_from_current_repo(section, &git_dir, current_dir, &mut filter_config_section)
+                    })
                     .is_some()
             {
                 return Err(Error::from(config::Error::ConfigTypedString(
diff --git a/gix/tests/gix-init.rs b/gix/tests/gix-init.rs
index bfe92e7f3ce..a0eb77045db 100644
--- a/gix/tests/gix-init.rs
+++ b/gix/tests/gix-init.rs
@@ -1,22 +1,28 @@
 #![allow(clippy::result_large_err)]
+
+use gix::open::Permissions;
+use gix::{Repository, ThreadSafeRepository};
+use gix_sec::Permission;
+use serial_test::serial;
+
+pub fn named_subrepo_opts(
+    fixture: &str,
+    name: &str,
+    opts: gix::open::Options,
+) -> std::result::Result<Repository, gix::open::Error> {
+    let repo_path = gix_testtools::scripted_fixture_read_only(fixture).unwrap().join(name);
+    Ok(ThreadSafeRepository::open_opts(repo_path, opts)?.to_thread_local())
+}
+
 mod with_overrides {
     use std::borrow::Cow;
 
-    use gix::{Repository, ThreadSafeRepository};
+    use crate::named_subrepo_opts;
     use gix_object::bstr::BStr;
     use gix_sec::Permission;
     use gix_testtools::Env;
     use serial_test::serial;
 
-    pub fn named_subrepo_opts(
-        fixture: &str,
-        name: &str,
-        opts: gix::open::Options,
-    ) -> std::result::Result<Repository, gix::open::Error> {
-        let repo_path = gix_testtools::scripted_fixture_read_only(fixture).unwrap().join(name);
-        Ok(ThreadSafeRepository::open_opts(repo_path, opts)?.to_thread_local())
-    }
-
     #[test]
     #[serial]
     fn order_from_api_and_cli_and_environment() -> gix_testtools::Result {
@@ -264,3 +270,21 @@ mod with_overrides {
         Cow::Borrowed(s.into())
     }
 }
+
+#[test]
+#[serial]
+fn git_worktree_and_strict_config() -> gix_testtools::Result {
+    let _restore_env_on_drop = gix_testtools::Env::new().set("GIT_WORK_TREE", ".");
+    let _repo = named_subrepo_opts(
+        "make_empty_repo.sh",
+        "",
+        gix::open::Options::isolated()
+            .permissions({
+                let mut perm = Permissions::isolated();
+                perm.env.git_prefix = Permission::Allow;
+                perm
+            })
+            .strict_config(true),
+    )?;
+    Ok(())
+}