From ddd33236be117aa10a5540b680afd8a65044c907 Mon Sep 17 00:00:00 2001
From: Hannes Achleitner <hannes.software@gmx.at>
Date: Fri, 23 Oct 2026 07:42:42 +0200
Subject: [PATCH 1/2] Bump to libgit2 2.0

---
 External/libgit2 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/External/libgit2 b/External/libgit2
index 49e408b3..f28579db 160000
--- a/External/libgit2
+++ b/External/libgit2
@@ -1 +1 @@
-Subproject commit 49e408b3208bc3093757a1c2db938d3590f3f412
+Subproject commit f28579db11737eaa2ced18498e229967a12f1c3f

From 7406a53292a112d44375027b370f33460b72bab0 Mon Sep 17 00:00:00 2001
From: Hannes Achleitner <hannes.software@gmx.at>
Date: Fri, 23 Oct 2026 10:05:57 +0200
Subject: [PATCH 2/2] Fix libgit2 2.0 API breaks (object/repo-init enums,
 GSSAPI link)

libgit2 2.0 removed GIT_OBJECT_OFS_DELTA/GIT_OBJECT_REF_DELTA from the
public git_object_t enum (pack-internal delta types, never real
objects); hardcode their stable numeric values (6/7) instead.

GIT_REPOSITORY_INIT_NO_DOTGIT_DIR and git_odb_hash moved to
deprecated.h; import it where needed.

Disable USE_GSSAPI in the libgit2 CMake build so the static lib
doesn't pull in GSS symbols that aren't linked by the Xcode project
(macOS auto-detects system Kerberos/GSSAPI via krb5-config).
---
 ObjectiveGit/GTOID.m        | 1 +
 ObjectiveGit/GTObject.h     | 5 +++--
 ObjectiveGit/GTRepository.h | 1 +
 script/update_libgit2       | 1 +
 4 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/ObjectiveGit/GTOID.m b/ObjectiveGit/GTOID.m
index 23412df4..45d4741e 100644
--- a/ObjectiveGit/GTOID.m
+++ b/ObjectiveGit/GTOID.m
@@ -10,6 +10,7 @@
 #import "NSError+Git.h"
 
 #import "git2/errors.h"
+#import "git2/deprecated.h"
 #import "git2/odb.h"
 
 @interface GTOID () {
diff --git a/ObjectiveGit/GTObject.h b/ObjectiveGit/GTObject.h
index e562e8dc..e8762eb2 100644
--- a/ObjectiveGit/GTObject.h
+++ b/ObjectiveGit/GTObject.h
@@ -37,8 +37,9 @@ typedef NS_ENUM(int, GTObjectType) {
 	GTObjectTypeTree = GIT_OBJECT_TREE,			/**< A tree (directory listing) object. */
 	GTObjectTypeBlob = GIT_OBJECT_BLOB,			/**< A file revision object. */
 	GTObjectTypeTag = GIT_OBJECT_TAG,				/**< An annotated tag object. */
-	GTObjectTypeOffsetDelta = GIT_OBJECT_OFS_DELTA,/**< A delta, base is given by an offset. */
-	GTObjectTypeRefDelta = GIT_OBJECT_REF_DELTA,	/**< A delta, base is given by object id. */
+	// Pack-only types are no longer part of libgit2's public object enum.
+	GTObjectTypeOffsetDelta = 6,					/**< A delta, base is given by an offset. */
+	GTObjectTypeRefDelta = 7,						/**< A delta, base is given by object id. */
 };
 
 @class GTRepository;
diff --git a/ObjectiveGit/GTRepository.h b/ObjectiveGit/GTRepository.h
index d1c4819c..18948e01 100644
--- a/ObjectiveGit/GTRepository.h
+++ b/ObjectiveGit/GTRepository.h
@@ -36,6 +36,7 @@
 #import <ObjectiveGit/GTFilterList.h>
 #import <ObjectiveGit/GTCheckoutOptions.h>
 #import <git2/checkout.h>
+#import <git2/deprecated.h>
 #import <git2/repository.h>
 #import <git2/transport.h>
 #import <git2/sys/transport.h>
diff --git a/script/update_libgit2 b/script/update_libgit2
index faf306e3..ddb9debe 100755
--- a/script/update_libgit2
+++ b/script/update_libgit2
@@ -69,6 +69,7 @@ cmake -DBUILD_SHARED_LIBS:BOOL=OFF \
   -DBUILD_TESTS:BOOL=OFF \
   -DTHREADSAFE:BOOL=ON \
   -DUSE_SSH=libssh2 \
+  -DUSE_GSSAPI:BOOL=OFF \
   -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
   ..
 cmake --build .