diff --git a/cmd/serv.go b/cmd/serv.go
index 2c035111d..b6cdab833 100644
--- a/cmd/serv.go
+++ b/cmd/serv.go
@@ -218,6 +218,7 @@ func runServ(c *cli.Context) error {
 	os.Setenv(models.EnvPRID, fmt.Sprintf("%d", 0))
 	os.Setenv(models.EnvIsDeployKey, fmt.Sprintf("%t", results.IsDeployKey))
 	os.Setenv(models.EnvKeyID, fmt.Sprintf("%d", results.KeyID))
+	os.Setenv(models.EnvAppURL, setting.AppURL)
 
 	//LFS token authentication
 	if verb == lfsAuthenticateVerb {
diff --git a/models/helper_environment.go b/models/helper_environment.go
index f1c758d65..8924d0a28 100644
--- a/models/helper_environment.go
+++ b/models/helper_environment.go
@@ -8,6 +8,8 @@ import (
 	"fmt"
 	"os"
 	"strings"
+
+	"code.gitea.io/gitea/modules/setting"
 )
 
 // env keys for git hooks need
@@ -23,6 +25,7 @@ const (
 	EnvIsDeployKey  = "GITEA_IS_DEPLOY_KEY"
 	EnvPRID         = "GITEA_PR_ID"
 	EnvIsInternal   = "GITEA_INTERNAL_PUSH"
+	EnvAppURL       = "GITEA_ROOT_URL"
 )
 
 // InternalPushingEnvironment returns an os environment to switch off hooks on push
@@ -62,6 +65,7 @@ func FullPushingEnvironment(author, committer *User, repo *Repository, repoName
 		EnvPusherID+"="+fmt.Sprintf("%d", committer.ID),
 		EnvRepoID+"="+fmt.Sprintf("%d", repo.ID),
 		EnvPRID+"="+fmt.Sprintf("%d", prID),
+		EnvAppURL+"="+setting.AppURL,
 		"SSH_ORIGINAL_COMMAND=gitea-internal",
 	)
 
diff --git a/routers/repo/http.go b/routers/repo/http.go
index d943cb2ae..0d5aa2e3e 100644
--- a/routers/repo/http.go
+++ b/routers/repo/http.go
@@ -268,6 +268,7 @@ func HTTP(ctx *context.Context) {
 			models.EnvPusherName + "=" + authUser.Name,
 			models.EnvPusherID + fmt.Sprintf("=%d", authUser.ID),
 			models.EnvIsDeployKey + "=false",
+			models.EnvAppURL + "=" + setting.AppURL,
 		}
 
 		if !authUser.KeepEmailPrivate {