diff --git a/tests/integration/api_branch_test.go b/tests/integration/api_branch_test.go
index dc1aaec2a2..c6937b4620 100644
--- a/tests/integration/api_branch_test.go
+++ b/tests/integration/api_branch_test.go
@@ -11,6 +11,7 @@ import (
 	auth_model "code.gitea.io/gitea/models/auth"
 	"code.gitea.io/gitea/models/db"
 	git_model "code.gitea.io/gitea/models/git"
+	"code.gitea.io/gitea/modules/git"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/tests"
 
@@ -114,7 +115,7 @@ func testAPICreateBranches(t *testing.T, giteaURL *url.URL) {
 	ctx := NewAPITestContext(t, username, "my-noo-repo", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
 	giteaURL.Path = ctx.GitPath()
 
-	t.Run("CreateRepo", doAPICreateRepository(ctx, false))
+	t.Run("CreateRepo", doAPICreateRepository(ctx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 	testCases := []struct {
 		OldBranch          string
 		NewBranch          string
diff --git a/tests/integration/api_helper_for_declarative_test.go b/tests/integration/api_helper_for_declarative_test.go
index 7755b9861a..3e54e2fe3f 100644
--- a/tests/integration/api_helper_for_declarative_test.go
+++ b/tests/integration/api_helper_for_declarative_test.go
@@ -16,6 +16,7 @@ import (
 	"code.gitea.io/gitea/models/auth"
 	"code.gitea.io/gitea/models/perm"
 	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/queue"
 	api "code.gitea.io/gitea/modules/structs"
@@ -47,17 +48,18 @@ func (ctx APITestContext) GitPath() string {
 	return fmt.Sprintf("%s/%s.git", ctx.Username, ctx.Reponame)
 }
 
-func doAPICreateRepository(ctx APITestContext, empty bool, callback ...func(*testing.T, api.Repository)) func(*testing.T) {
+func doAPICreateRepository(ctx APITestContext, empty bool, objectFormat git.ObjectFormat, callback ...func(*testing.T, api.Repository)) func(*testing.T) {
 	return func(t *testing.T) {
 		createRepoOption := &api.CreateRepoOption{
-			AutoInit:    !empty,
-			Description: "Temporary repo",
-			Name:        ctx.Reponame,
-			Private:     true,
-			Template:    true,
-			Gitignores:  "",
-			License:     "WTFPL",
-			Readme:      "Default",
+			AutoInit:         !empty,
+			Description:      "Temporary repo",
+			Name:             ctx.Reponame,
+			Private:          true,
+			Template:         true,
+			Gitignores:       "",
+			License:          "WTFPL",
+			Readme:           "Default",
+			ObjectFormatName: objectFormat.Name(),
 		}
 		req := NewRequestWithJSON(t, "POST", "/api/v1/user/repos", createRepoOption).
 			AddTokenAuth(ctx.Token)
diff --git a/tests/integration/api_repo_file_create_test.go b/tests/integration/api_repo_file_create_test.go
index 41ad7211ff..a4985ed142 100644
--- a/tests/integration/api_repo_file_create_test.go
+++ b/tests/integration/api_repo_file_create_test.go
@@ -17,6 +17,7 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/gitrepo"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
@@ -277,7 +278,7 @@ func TestAPICreateFile(t *testing.T) {
 		MakeRequest(t, req, http.StatusForbidden)
 
 		// Test creating a file in an empty repository
-		doAPICreateRepository(NewAPITestContext(t, "user2", "empty-repo", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser), true)(t)
+		doAPICreateRepository(NewAPITestContext(t, "user2", "empty-repo", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser), true, git.Sha1ObjectFormat)(t) // FIXME: use forEachObjectFormat
 		createFileOptions = getCreateFileOptions()
 		fileID++
 		treePath = fmt.Sprintf("new/file%d.txt", fileID)
diff --git a/tests/integration/api_repo_file_get_test.go b/tests/integration/api_repo_file_get_test.go
index 4649babad1..1a4e670bc1 100644
--- a/tests/integration/api_repo_file_get_test.go
+++ b/tests/integration/api_repo_file_get_test.go
@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	auth_model "code.gitea.io/gitea/models/auth"
+	"code.gitea.io/gitea/modules/git"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/tests"
 
@@ -26,7 +27,7 @@ func TestAPIGetRawFileOrLFS(t *testing.T) {
 	// Test with LFS
 	onGiteaRun(t, func(t *testing.T, u *url.URL) {
 		httpContext := NewAPITestContext(t, "user2", "repo-lfs-test", auth_model.AccessTokenScopeWriteRepository)
-		doAPICreateRepository(httpContext, false, func(t *testing.T, repository api.Repository) {
+		doAPICreateRepository(httpContext, false, git.Sha1ObjectFormat, func(t *testing.T, repository api.Repository) { // FIXME: use forEachObjectFormat
 			u.Path = httpContext.GitPath()
 			dstPath := t.TempDir()
 
diff --git a/tests/integration/api_repo_lfs_test.go b/tests/integration/api_repo_lfs_test.go
index 211dcf76c1..763082b178 100644
--- a/tests/integration/api_repo_lfs_test.go
+++ b/tests/integration/api_repo_lfs_test.go
@@ -17,6 +17,7 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/lfs"
 	"code.gitea.io/gitea/modules/setting"
@@ -61,7 +62,7 @@ func TestAPILFSMediaType(t *testing.T) {
 
 func createLFSTestRepository(t *testing.T, name string) *repo_model.Repository {
 	ctx := NewAPITestContext(t, "user2", "lfs-"+name+"-repo", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
-	t.Run("CreateRepo", doAPICreateRepository(ctx, false))
+	t.Run("CreateRepo", doAPICreateRepository(ctx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 
 	repo, err := repo_model.GetRepositoryByOwnerAndName(db.DefaultContext, "user2", "lfs-"+name+"-repo")
 	assert.NoError(t, err)
diff --git a/tests/integration/api_repo_test.go b/tests/integration/api_repo_test.go
index a503b201bc..4c2c43b197 100644
--- a/tests/integration/api_repo_test.go
+++ b/tests/integration/api_repo_test.go
@@ -16,6 +16,7 @@ import (
 	unit_model "code.gitea.io/gitea/models/unit"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 	repo_service "code.gitea.io/gitea/services/repository"
@@ -427,7 +428,7 @@ func testAPIRepoMigrateConflict(t *testing.T, u *url.URL) {
 		httpContext := baseAPITestContext
 
 		httpContext.Reponame = "repo-tmp-17"
-		t.Run("CreateRepo", doAPICreateRepository(httpContext, false))
+		t.Run("CreateRepo", doAPICreateRepository(httpContext, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 
 		user, err := user_model.GetUserByName(db.DefaultContext, httpContext.Username)
 		assert.NoError(t, err)
@@ -510,7 +511,7 @@ func testAPIRepoCreateConflict(t *testing.T, u *url.URL) {
 		httpContext := baseAPITestContext
 
 		httpContext.Reponame = "repo-tmp-17"
-		t.Run("CreateRepo", doAPICreateRepository(httpContext, false))
+		t.Run("CreateRepo", doAPICreateRepository(httpContext, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 
 		req := NewRequestWithJSON(t, "POST", "/api/v1/user/repos",
 			&api.CreateRepoOption{
diff --git a/tests/integration/git_test.go b/tests/integration/git_test.go
index 6a227d4603..7f15bc81b4 100644
--- a/tests/integration/git_test.go
+++ b/tests/integration/git_test.go
@@ -64,7 +64,7 @@ func testGit(t *testing.T, u *url.URL) {
 
 		dstPath := t.TempDir()
 
-		t.Run("CreateRepoInDifferentUser", doAPICreateRepository(forkedUserCtx, false))
+		t.Run("CreateRepoInDifferentUser", doAPICreateRepository(forkedUserCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 		t.Run("AddUserAsCollaborator", doAPIAddCollaborator(forkedUserCtx, httpContext.Username, perm.AccessModeRead))
 
 		t.Run("ForkFromDifferentUser", doAPIForkRepository(httpContext, forkedUserCtx.Username))
@@ -103,7 +103,7 @@ func testGit(t *testing.T, u *url.URL) {
 		sshContext.Reponame = "repo-tmp-18"
 		keyname := "my-testing-key"
 		forkedUserCtx.Reponame = sshContext.Reponame
-		t.Run("CreateRepoInDifferentUser", doAPICreateRepository(forkedUserCtx, false))
+		t.Run("CreateRepoInDifferentUser", doAPICreateRepository(forkedUserCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 		t.Run("AddUserAsCollaborator", doAPIAddCollaborator(forkedUserCtx, sshContext.Username, perm.AccessModeRead))
 		t.Run("ForkFromDifferentUser", doAPIForkRepository(sshContext, forkedUserCtx.Username))
 
diff --git a/tests/integration/gpg_git_test.go b/tests/integration/gpg_git_test.go
index 3ba4a5882c..b1f8fad268 100644
--- a/tests/integration/gpg_git_test.go
+++ b/tests/integration/gpg_git_test.go
@@ -13,6 +13,7 @@ import (
 	auth_model "code.gitea.io/gitea/models/auth"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/process"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
@@ -56,7 +57,7 @@ func TestGPGGit(t *testing.T) {
 		t.Run("Unsigned-Initial", func(t *testing.T) {
 			defer tests.PrintCurrentTest(t)()
 			testCtx := NewAPITestContext(t, username, "initial-unsigned", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
-			t.Run("CreateRepository", doAPICreateRepository(testCtx, false))
+			t.Run("CreateRepository", doAPICreateRepository(testCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 			t.Run("CheckMasterBranchUnsigned", doAPIGetBranch(testCtx, "master", func(t *testing.T, branch api.Branch) {
 				assert.NotNil(t, branch.Commit)
 				assert.NotNil(t, branch.Commit.Verification)
@@ -149,7 +150,7 @@ func TestGPGGit(t *testing.T) {
 		t.Run("AlwaysSign-Initial", func(t *testing.T) {
 			defer tests.PrintCurrentTest(t)()
 			testCtx := NewAPITestContext(t, username, "initial-always", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
-			t.Run("CreateRepository", doAPICreateRepository(testCtx, false))
+			t.Run("CreateRepository", doAPICreateRepository(testCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 			t.Run("CheckMasterBranchSigned", doAPIGetBranch(testCtx, "master", func(t *testing.T, branch api.Branch) {
 				assert.NotNil(t, branch.Commit)
 				if branch.Commit == nil {
@@ -171,7 +172,7 @@ func TestGPGGit(t *testing.T) {
 		t.Run("AlwaysSign-Initial-CRUD-Never", func(t *testing.T) {
 			defer tests.PrintCurrentTest(t)()
 			testCtx := NewAPITestContext(t, username, "initial-always-never", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
-			t.Run("CreateRepository", doAPICreateRepository(testCtx, false))
+			t.Run("CreateRepository", doAPICreateRepository(testCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 			t.Run("CreateCRUDFile-Never", crudActionCreateFile(
 				t, testCtx, user, "master", "never", "unsigned-never.txt", func(t *testing.T, response api.FileResponse) {
 					assert.False(t, response.Verification.Verified)
@@ -182,7 +183,7 @@ func TestGPGGit(t *testing.T) {
 		t.Run("AlwaysSign-Initial-CRUD-ParentSigned-On-Always", func(t *testing.T) {
 			defer tests.PrintCurrentTest(t)()
 			testCtx := NewAPITestContext(t, username, "initial-always-parent", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
-			t.Run("CreateRepository", doAPICreateRepository(testCtx, false))
+			t.Run("CreateRepository", doAPICreateRepository(testCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 			t.Run("CreateCRUDFile-ParentSigned", crudActionCreateFile(
 				t, testCtx, user, "master", "parentsigned", "signed-parent.txt", func(t *testing.T, response api.FileResponse) {
 					assert.True(t, response.Verification.Verified)
@@ -198,7 +199,7 @@ func TestGPGGit(t *testing.T) {
 		t.Run("AlwaysSign-Initial-CRUD-Always", func(t *testing.T) {
 			defer tests.PrintCurrentTest(t)()
 			testCtx := NewAPITestContext(t, username, "initial-always-always", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
-			t.Run("CreateRepository", doAPICreateRepository(testCtx, false))
+			t.Run("CreateRepository", doAPICreateRepository(testCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 			t.Run("CreateCRUDFile-Always", crudActionCreateFile(
 				t, testCtx, user, "master", "always", "signed-always.txt", func(t *testing.T, response api.FileResponse) {
 					assert.True(t, response.Verification.Verified)
diff --git a/tests/integration/ssh_key_test.go b/tests/integration/ssh_key_test.go
index 9c3daa112c..cf261dc39b 100644
--- a/tests/integration/ssh_key_test.go
+++ b/tests/integration/ssh_key_test.go
@@ -47,34 +47,36 @@ func TestPushDeployKeyOnEmptyRepo(t *testing.T) {
 }
 
 func testPushDeployKeyOnEmptyRepo(t *testing.T, u *url.URL) {
-	// OK login
-	ctx := NewAPITestContext(t, "user2", "deploy-key-empty-repo-1", auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
+	forEachObjectFormat(t, func(t *testing.T, objectFormat git.ObjectFormat) {
+		// OK login
+		ctx := NewAPITestContext(t, "user2", "deploy-key-empty-repo-"+objectFormat.Name(), auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
 
-	keyname := fmt.Sprintf("%s-push", ctx.Reponame)
-	u.Path = ctx.GitPath()
+		keyname := fmt.Sprintf("%s-push", ctx.Reponame)
+		u.Path = ctx.GitPath()
 
-	t.Run("CreateEmptyRepository", doAPICreateRepository(ctx, true))
+		t.Run("CreateEmptyRepository", doAPICreateRepository(ctx, true, objectFormat))
 
-	t.Run("CheckIsEmpty", doCheckRepositoryEmptyStatus(ctx, true))
+		t.Run("CheckIsEmpty", doCheckRepositoryEmptyStatus(ctx, true))
 
-	withKeyFile(t, keyname, func(keyFile string) {
-		t.Run("CreatePushDeployKey", doAPICreateDeployKey(ctx, keyname, keyFile, false))
+		withKeyFile(t, keyname, func(keyFile string) {
+			t.Run("CreatePushDeployKey", doAPICreateDeployKey(ctx, keyname, keyFile, false))
 
-		// Setup the testing repository
-		dstPath := t.TempDir()
+			// Setup the testing repository
+			dstPath := t.TempDir()
 
-		t.Run("InitTestRepository", doGitInitTestRepository(dstPath, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
+			t.Run("InitTestRepository", doGitInitTestRepository(dstPath, objectFormat))
 
-		// Setup remote link
-		sshURL := createSSHUrl(ctx.GitPath(), u)
+			// Setup remote link
+			sshURL := createSSHUrl(ctx.GitPath(), u)
 
-		t.Run("AddRemote", doGitAddRemote(dstPath, "origin", sshURL))
+			t.Run("AddRemote", doGitAddRemote(dstPath, "origin", sshURL))
 
-		t.Run("SSHPushTestRepository", doGitPushTestRepository(dstPath, "origin", "master"))
+			t.Run("SSHPushTestRepository", doGitPushTestRepository(dstPath, "origin", "master"))
 
-		t.Run("CheckIsNotEmpty", doCheckRepositoryEmptyStatus(ctx, false))
+			t.Run("CheckIsNotEmpty", doCheckRepositoryEmptyStatus(ctx, false))
 
-		t.Run("DeleteRepository", doAPIDeleteRepository(ctx))
+			t.Run("DeleteRepository", doAPIDeleteRepository(ctx))
+		})
 	})
 }
 
@@ -102,8 +104,8 @@ func testKeyOnlyOneType(t *testing.T, u *url.URL) {
 	failCtx := ctx
 	failCtx.ExpectedCode = http.StatusUnprocessableEntity
 
-	t.Run("CreateRepository", doAPICreateRepository(ctx, false))
-	t.Run("CreateOtherRepository", doAPICreateRepository(otherCtx, false))
+	t.Run("CreateRepository", doAPICreateRepository(ctx, false, git.Sha1ObjectFormat))           // FIXME: use forEachObjectFormat
+	t.Run("CreateOtherRepository", doAPICreateRepository(otherCtx, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 
 	withKeyFile(t, keyname, func(keyFile string) {
 		var userKeyPublicKeyID int64
@@ -177,7 +179,7 @@ func testKeyOnlyOneType(t *testing.T, u *url.URL) {
 
 			t.Run("DeleteOtherRepository", doAPIDeleteRepository(otherCtxWithDeleteRepo))
 
-			t.Run("RecreateRepository", doAPICreateRepository(ctxWithDeleteRepo, false))
+			t.Run("RecreateRepository", doAPICreateRepository(ctxWithDeleteRepo, false, git.Sha1ObjectFormat)) // FIXME: use forEachObjectFormat
 
 			t.Run("CreateUserKey", doAPICreateUserKey(ctx, keyname, keyFile, func(t *testing.T, publicKey api.PublicKey) {
 				userKeyPublicKeyID = publicKey.ID