diff --git a/pkg/runner/run_context.go b/pkg/runner/run_context.go
index e4ca1b2..b9ece35 100644
--- a/pkg/runner/run_context.go
+++ b/pkg/runner/run_context.go
@@ -874,6 +874,18 @@ func (rc *RunContext) getGithubContext(ctx context.Context) *model.GithubContext
 		ghc.APIURL = fmt.Sprintf("https://%s/api/v3", rc.Config.GitHubInstance)
 		ghc.GraphQLURL = fmt.Sprintf("https://%s/api/graphql", rc.Config.GitHubInstance)
 	}
+
+	{ // Adapt to Gitea
+		instance := rc.Config.GitHubInstance
+		if !strings.HasPrefix(instance, "http://") &&
+			!strings.HasPrefix(instance, "https://") {
+			instance = "https://" + instance
+		}
+		ghc.ServerURL = instance
+		ghc.APIURL = instance + "/api/v1" // the version of Gitea is v1
+		ghc.GraphQLURL = ""               // Gitea doesn't support graphql
+	}
+
 	// allow to be overridden by user
 	if rc.Config.Env["GITHUB_SERVER_URL"] != "" {
 		ghc.ServerURL = rc.Config.Env["GITHUB_SERVER_URL"]
diff --git a/pkg/runner/step_action_remote.go b/pkg/runner/step_action_remote.go
index 78e97ed..0b5c5be 100644
--- a/pkg/runner/step_action_remote.go
+++ b/pkg/runner/step_action_remote.go
@@ -49,8 +49,6 @@ func (sar *stepActionRemote) prepareActionExecutor() common.Executor {
 		}
 
 		github := sar.getGithubContext(ctx)
-		sar.remoteAction.URL = github.ServerURL
-
 		if sar.remoteAction.IsCheckout() && isLocalCheckout(github, sar.Step) && !sar.RunContext.Config.NoSkipCheckout {
 			common.Logger(ctx).Debugf("Skipping local actions/checkout because workdir was already copied")
 			return nil
@@ -225,11 +223,7 @@ type remoteAction struct {
 	Ref  string
 }
 
-func (ra *remoteAction) CloneURL(defaultURL string) string {
-	u := ra.URL
-	if u == "" {
-		u = defaultURL
-	}
+func (ra *remoteAction) CloneURL(u string) string {
 	if !strings.HasPrefix(u, "http://") && !strings.HasPrefix(u, "https://") {
 		u = "https://" + u
 	}
@@ -244,6 +238,9 @@ func (ra *remoteAction) IsCheckout() bool {
 }
 
 func (ra *remoteAction) GetAvailableCloneURL(actionURLs []string) (string, error) {
+	if ra.URL != "" {
+		return ra.CloneURL(ra.URL), nil
+	}
 	for _, u := range actionURLs {
 		cloneURL := ra.CloneURL(u)
 		resp, err := detectActionClient.Get(cloneURL)