diff --git a/services/doctor/mergebase.go b/services/doctor/mergebase.go
deleted file mode 100644
index bebde30bee..0000000000
--- a/services/doctor/mergebase.go
+++ /dev/null
@@ -1,114 +0,0 @@
-// Copyright 2020 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package doctor
-
-import (
-	"context"
-	"fmt"
-	"strings"
-
-	"forgejo.org/models/db"
-	issues_model "forgejo.org/models/issues"
-	repo_model "forgejo.org/models/repo"
-	"forgejo.org/modules/git"
-	"forgejo.org/modules/log"
-
-	"xorm.io/builder"
-)
-
-func iteratePRs(ctx context.Context, repo *repo_model.Repository, each func(*repo_model.Repository, *issues_model.PullRequest) error) error {
-	return db.Iterate(
-		ctx,
-		builder.Eq{"base_repo_id": repo.ID},
-		func(ctx context.Context, bean *issues_model.PullRequest) error {
-			return each(repo, bean)
-		},
-	)
-}
-
-func checkPRMergeBase(ctx context.Context, logger log.Logger, autofix bool) error {
-	numRepos := 0
-	numPRs := 0
-	numPRsUpdated := 0
-	err := iterateRepositories(ctx, func(repo *repo_model.Repository) error {
-		numRepos++
-		return iteratePRs(ctx, repo, func(repo *repo_model.Repository, pr *issues_model.PullRequest) error {
-			numPRs++
-			pr.BaseRepo = repo
-			repoPath := repo.RepoPath()
-
-			oldMergeBase := pr.MergeBase
-
-			if !pr.HasMerged {
-				var err error
-				pr.MergeBase, _, err = git.NewCommand(ctx, "merge-base").AddDashesAndList(pr.BaseBranch, pr.GetGitRefName()).RunStdString(&git.RunOpts{Dir: repoPath})
-				if err != nil {
-					var err2 error
-					pr.MergeBase, _, err2 = git.NewCommand(ctx, "rev-parse").AddDynamicArguments(git.BranchPrefix + pr.BaseBranch).RunStdString(&git.RunOpts{Dir: repoPath})
-					if err2 != nil {
-						logger.Warn("Unable to get merge base for PR ID %d, #%d onto %s in %s/%s. Error: %v & %v", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err, err2)
-						return nil
-					}
-				}
-			} else {
-				parentsString, _, err := git.NewCommand(ctx, "rev-list", "--parents", "-n", "1").AddDynamicArguments(pr.MergedCommitID).RunStdString(&git.RunOpts{Dir: repoPath})
-				if err != nil {
-					logger.Warn("Unable to get parents for merged PR ID %d, #%d onto %s in %s/%s. Error: %v", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err)
-					return nil
-				}
-				parents := strings.Split(strings.TrimSpace(parentsString), " ")
-				if len(parents) < 2 {
-					return nil
-				}
-
-				refs := append([]string{}, parents[1:]...)
-				refs = append(refs, pr.GetGitRefName())
-				cmd := git.NewCommand(ctx, "merge-base").AddDashesAndList(refs...)
-				pr.MergeBase, _, err = cmd.RunStdString(&git.RunOpts{Dir: repoPath})
-				if err != nil {
-					logger.Warn("Unable to get merge base for merged PR ID %d, #%d onto %s in %s/%s. Error: %v", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err)
-					return nil
-				}
-			}
-			pr.MergeBase = strings.TrimSpace(pr.MergeBase)
-			if pr.MergeBase != oldMergeBase {
-				if autofix {
-					if err := pr.UpdateCols(ctx, "merge_base"); err != nil {
-						logger.Critical("Failed to update merge_base. ERROR: %v", err)
-						return fmt.Errorf("Failed to update merge_base. ERROR: %w", err)
-					}
-				} else {
-					logger.Info("#%d onto %s in %s/%s: MergeBase should be %s but is %s", pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, oldMergeBase, pr.MergeBase)
-				}
-				numPRsUpdated++
-			}
-			return nil
-		})
-	})
-
-	if autofix {
-		logger.Info("%d PR mergebases updated of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos)
-	} else {
-		if numPRsUpdated == 0 {
-			logger.Info("All %d PRs in %d repos have a correct mergebase", numPRs, numRepos)
-		} else if err == nil {
-			logger.Critical("%d PRs with incorrect mergebases of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos)
-			return fmt.Errorf("%d PRs with incorrect mergebases of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos)
-		} else {
-			logger.Warn("%d PRs with incorrect mergebases of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos)
-		}
-	}
-
-	return err
-}
-
-func init() {
-	Register(&Check{
-		Title:     "Recalculate merge bases",
-		Name:      "recalculate-merge-bases",
-		IsDefault: false,
-		Run:       checkPRMergeBase,
-		Priority:  7,
-	})
-}