diff --git a/modules/migration/release.go b/modules/migration/release.go
index f92cf25e7b..e25e7e4428 100644
--- a/modules/migration/release.go
+++ b/modules/migration/release.go
@@ -10,9 +10,12 @@ import (
 
 // ReleaseAsset represents a release asset
 type ReleaseAsset struct {
-	ID            int64
-	Name          string
-	ContentType   *string `yaml:"content_type"`
+	ID   int64
+	Name string
+
+	// There was a field "ContentType (content_type)" because Some forges can provide that for assets,
+	// but we don't need it when migrating, so the field is omitted here.
+
 	Size          *int
 	DownloadCount *int `yaml:"download_count"`
 	Created       time.Time
diff --git a/modules/structs/pull.go b/modules/structs/pull.go
index 7cc58217a0..3ad2f78bd3 100644
--- a/modules/structs/pull.go
+++ b/modules/structs/pull.go
@@ -140,6 +140,8 @@ type CreatePullRequestOption struct {
 	Reviewers []string `json:"reviewers"`
 	// The list of team reviewer names
 	TeamReviewers []string `json:"team_reviewers"`
+	// Whether maintainers can edit the pull request
+	AllowMaintainerEdit *bool `json:"allow_maintainer_edit"`
 }
 
 // EditPullRequestOption options when modify pull request
diff --git a/routers/api/v1/repo/pull.go b/routers/api/v1/repo/pull.go
index c6cc16e41a..135da1278e 100644
--- a/routers/api/v1/repo/pull.go
+++ b/routers/api/v1/repo/pull.go
@@ -25,6 +25,7 @@ import (
 	"code.gitea.io/gitea/modules/gitrepo"
 	"code.gitea.io/gitea/modules/graceful"
 	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/optional"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"
@@ -496,6 +497,11 @@ func CreatePullRequest(ctx *context.APIContext) {
 		deadlineUnix = timeutil.TimeStamp(form.Deadline.Unix())
 	}
 
+	unitPullRequest, err := ctx.Repo.Repository.GetUnit(ctx, unit.TypePullRequests)
+	if err != nil {
+		ctx.APIErrorInternal(err)
+	}
+
 	prIssue := &issues_model.Issue{
 		RepoID:       repo.ID,
 		Title:        form.Title,
@@ -517,6 +523,8 @@ func CreatePullRequest(ctx *context.APIContext) {
 		Type:       issues_model.PullRequestGitea,
 	}
 
+	pr.AllowMaintainerEdit = optional.FromPtr(form.AllowMaintainerEdit).ValueOrDefault(unitPullRequest.PullRequestsConfig().DefaultAllowMaintainerEdit)
+
 	// Get all assignee IDs
 	assigneeIDs, err := issues_model.MakeIDsFromAPIAssigneesToAdd(ctx, form.Assignee, form.Assignees)
 	if err != nil {
diff --git a/routers/web/repo/pull.go b/routers/web/repo/pull.go
index ad4d3da294..7c67d614f6 100644
--- a/routers/web/repo/pull.go
+++ b/routers/web/repo/pull.go
@@ -1390,6 +1390,7 @@ func CompareAndPullRequestPost(ctx *context.Context) {
 		AssigneeIDs:     assigneeIDs,
 		Reviewers:       validateRet.Reviewers,
 		TeamReviewers:   validateRet.TeamReviewers,
+		ProjectID:       projectID,
 	}
 	if err := pull_service.NewPullRequest(ctx, prOpts); err != nil {
 		switch {
@@ -1441,15 +1442,6 @@ func CompareAndPullRequestPost(ctx *context.Context) {
 		return
 	}
 
-	if projectID > 0 && ctx.Repo.CanWrite(unit.TypeProjects) {
-		if err := issues_model.IssueAssignOrRemoveProject(ctx, pullIssue, ctx.Doer, projectID, 0); err != nil {
-			if !errors.Is(err, util.ErrPermissionDenied) {
-				ctx.ServerError("IssueAssignOrRemoveProject", err)
-				return
-			}
-		}
-	}
-
 	log.Trace("Pull request created: %d/%d", repo.ID, pullIssue.ID)
 	ctx.JSONRedirect(pullIssue.Link())
 }
diff --git a/services/forms/repo_form.go b/services/forms/repo_form.go
index 2d33d2b42b..e4545570c8 100644
--- a/services/forms/repo_form.go
+++ b/services/forms/repo_form.go
@@ -405,13 +405,6 @@ func (f *NewPackagistHookForm) Validate(req *http.Request, errs binding.Errors)
 	return middleware.Validate(errs, ctx.Data, f, ctx.Locale)
 }
 
-// .___
-// |   | ______ ________ __   ____
-// |   |/  ___//  ___/  |  \_/ __ \
-// |   |\___ \ \___ \|  |  /\  ___/
-// |___/____  >____  >____/  \___  >
-//          \/     \/            \/
-
 // CreateIssueForm form for creating issue
 type CreateIssueForm struct {
 	Title               string `binding:"Required;MaxSize(255)"`
diff --git a/services/migrations/github.go b/services/migrations/github.go
index ae7350c016..ce631dcd42 100644
--- a/services/migrations/github.go
+++ b/services/migrations/github.go
@@ -329,7 +329,6 @@ func (g *GithubDownloaderV3) convertGithubRelease(ctx context.Context, rel *gith
 		r.Assets = append(r.Assets, &base.ReleaseAsset{
 			ID:            asset.GetID(),
 			Name:          asset.GetName(),
-			ContentType:   asset.ContentType,
 			Size:          asset.Size,
 			DownloadCount: asset.DownloadCount,
 			Created:       asset.CreatedAt.Time,
diff --git a/services/migrations/gitlab.go b/services/migrations/gitlab.go
index 260fa9cd5d..cbf974af2c 100644
--- a/services/migrations/gitlab.go
+++ b/services/migrations/gitlab.go
@@ -316,12 +316,11 @@ func (g *GitlabDownloader) convertGitlabRelease(ctx context.Context, rel *gitlab
 
 	httpClient := NewMigrationHTTPClient()
 
-	for k, asset := range rel.Assets.Links {
+	for _, asset := range rel.Assets.Links {
 		assetID := asset.ID // Don't optimize this, for closure we need a local variable
 		r.Assets = append(r.Assets, &base.ReleaseAsset{
 			ID:            int64(asset.ID),
 			Name:          asset.Name,
-			ContentType:   &rel.Assets.Sources[k].Format,
 			Size:          &zero,
 			DownloadCount: &zero,
 			DownloadFunc: func() (io.ReadCloser, error) {
diff --git a/services/migrations/main_test.go b/services/migrations/main_test.go
index d0ec6a3f8d..581af614f9 100644
--- a/services/migrations/main_test.go
+++ b/services/migrations/main_test.go
@@ -171,7 +171,6 @@ func assertReactionsEqual(t *testing.T, expected, actual []*base.Reaction) {
 func assertReleaseAssetEqual(t *testing.T, expected, actual *base.ReleaseAsset) {
 	assert.Equal(t, expected.ID, actual.ID)
 	assert.Equal(t, expected.Name, actual.Name)
-	assert.Equal(t, expected.ContentType, actual.ContentType)
 	assert.Equal(t, expected.Size, actual.Size)
 	assert.Equal(t, expected.DownloadCount, actual.DownloadCount)
 	assertTimeEqual(t, expected.Created, actual.Created)
diff --git a/services/pull/pull.go b/services/pull/pull.go
index 9ed2605417..ff5c562001 100644
--- a/services/pull/pull.go
+++ b/services/pull/pull.go
@@ -52,6 +52,7 @@ type NewPullRequestOptions struct {
 	AssigneeIDs     []int64
 	Reviewers       []*user_model.User
 	TeamReviewers   []*organization.Team
+	ProjectID       int64
 }
 
 // NewPullRequest creates new pull request with labels for repository.
@@ -67,11 +68,13 @@ func NewPullRequest(ctx context.Context, opts *NewPullRequestOptions) error {
 
 	// user should be a collaborator or a member of the organization for base repo
 	canCreate := issue.Poster.IsAdmin || pr.Flow == issues_model.PullRequestFlowAGit
+	canAssignProject := canCreate
 	if !canCreate {
 		canCreate, err := repo_model.IsOwnerMemberCollaborator(ctx, repo, issue.Poster.ID)
 		if err != nil {
 			return err
 		}
+		canAssignProject = canCreate
 
 		if !canCreate {
 			// or user should have write permission in the head repo
@@ -85,6 +88,7 @@ func NewPullRequest(ctx context.Context, opts *NewPullRequestOptions) error {
 			if !perm.CanWrite(unit.TypeCode) {
 				return issues_model.ErrMustCollaborator
 			}
+			canAssignProject = perm.CanWrite(unit.TypeProjects)
 		}
 	}
 
@@ -117,6 +121,12 @@ func NewPullRequest(ctx context.Context, opts *NewPullRequestOptions) error {
 			assigneeCommentMap[assigneeID] = comment
 		}
 
+		if opts.ProjectID > 0 && canAssignProject {
+			if err := issues_model.IssueAssignOrRemoveProject(ctx, issue, issue.Poster, opts.ProjectID, 0); err != nil {
+				return err
+			}
+		}
+
 		pr.Issue = issue
 		issue.PullRequest = pr
 
diff --git a/templates/swagger/v1_json.tmpl b/templates/swagger/v1_json.tmpl
index be6c4bdfd3..0c33227364 100644
--- a/templates/swagger/v1_json.tmpl
+++ b/templates/swagger/v1_json.tmpl
@@ -23420,6 +23420,11 @@
       "description": "CreatePullRequestOption options when creating a pull request",
       "type": "object",
       "properties": {
+        "allow_maintainer_edit": {
+          "description": "Whether maintainers can edit the pull request",
+          "type": "boolean",
+          "x-go-name": "AllowMaintainerEdit"
+        },
         "assignee": {
           "description": "The primary assignee username",
           "type": "string",
diff --git a/tests/integration/api_pull_test.go b/tests/integration/api_pull_test.go
index 433dce3d5e..0e1a88dcee 100644
--- a/tests/integration/api_pull_test.go
+++ b/tests/integration/api_pull_test.go
@@ -270,13 +270,20 @@ func TestAPICreatePullSuccess(t *testing.T) {
 	owner11 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: repo11.OwnerID})
 
 	session := loginUser(t, owner11.Name)
+	prTitle := "test pull request title " + time.Now().String()
 	token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeWriteRepository)
 	req := NewRequestWithJSON(t, http.MethodPost, fmt.Sprintf("/api/v1/repos/%s/%s/pulls", owner10.Name, repo10.Name), &api.CreatePullRequestOption{
 		Head:  owner11.Name + ":master",
 		Base:  "master",
-		Title: "create a failure pr",
+		Title: prTitle,
 	}).AddTokenAuth(token)
 	MakeRequest(t, req, http.StatusCreated)
+
+	// Also test that AllowMaintainerEdit is false by default
+	prIssue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{Title: prTitle})
+	pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{IssueID: prIssue.ID})
+	assert.False(t, pr.AllowMaintainerEdit)
+
 	MakeRequest(t, req, http.StatusUnprocessableEntity) // second request should fail
 }
 
@@ -290,11 +297,14 @@ func TestAPICreatePullBasePermission(t *testing.T) {
 	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
 
 	session := loginUser(t, user4.Name)
+	prTitle := "test pull request title " + time.Now().String()
 	token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeWriteRepository)
 	opts := &api.CreatePullRequestOption{
 		Head:  repo11.OwnerName + ":master",
 		Base:  "master",
-		Title: "create a failure pr",
+		Title: prTitle,
+
+		AllowMaintainerEdit: util.ToPointer(true),
 	}
 	req := NewRequestWithJSON(t, http.MethodPost, fmt.Sprintf("/api/v1/repos/%s/%s/pulls", owner10.Name, repo10.Name), &opts).AddTokenAuth(token)
 	MakeRequest(t, req, http.StatusForbidden)
@@ -306,6 +316,11 @@ func TestAPICreatePullBasePermission(t *testing.T) {
 	// create again
 	req = NewRequestWithJSON(t, http.MethodPost, fmt.Sprintf("/api/v1/repos/%s/%s/pulls", owner10.Name, repo10.Name), &opts).AddTokenAuth(token)
 	MakeRequest(t, req, http.StatusCreated)
+
+	// Also test that AllowMaintainerEdit is set to true
+	prIssue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{Title: prTitle})
+	pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{IssueID: prIssue.ID})
+	assert.True(t, pr.AllowMaintainerEdit)
 }
 
 func TestAPICreatePullHeadPermission(t *testing.T) {