diff --git a/server/upstream/const.go b/server/upstream/const.go
index ce76e21..1523437 100644
--- a/server/upstream/const.go
+++ b/server/upstream/const.go
@@ -21,3 +21,5 @@ var fileCacheSizeLimit = 1024 * 1024
 var canonicalDomainCacheTimeout = 15 * time.Minute
 
 const canonicalDomainConfig = ".domains"
+
+const giteaApiRepos = "/api/v1/repos/"
diff --git a/server/upstream/domains.go b/server/upstream/domains.go
index cfe13e6..a80cc26 100644
--- a/server/upstream/domains.go
+++ b/server/upstream/domains.go
@@ -1,6 +1,9 @@
 package upstream
 
 import (
+	"fmt"
+	"net/url"
+	"path"
 	"strings"
 
 	"github.com/valyala/fasthttp"
@@ -10,8 +13,30 @@ import (
 
 // CheckCanonicalDomain returns the canonical domain specified in the repo (using the `.domains` file).
 func CheckCanonicalDomain(targetOwner, targetRepo, targetBranch, actualDomain, mainDomainSuffix, giteaRoot, giteaAPIToken string, canonicalDomainCache cache.SetGetKey) (string, bool) {
-	domains := []string{}
-	valid := false
+	return checkCanonicalDomain(targetOwner, targetRepo, targetBranch, actualDomain, mainDomainSuffix, giteaRoot, giteaAPIToken, canonicalDomainCache)
+}
+
+func giteaRawContent(targetOwner, targetRepo, ref, giteaRoot, giteaAPIToken, resource string) ([]byte, error) {
+	req := fasthttp.AcquireRequest()
+
+	req.SetRequestURI(path.Join(giteaRoot, giteaApiRepos, targetOwner, "/", targetRepo, "/raw/", resource, "?ref="+url.QueryEscape(ref)))
+	req.Header.Set(fasthttp.HeaderAuthorization, giteaAPIToken)
+	res := fasthttp.AcquireResponse()
+
+	if err := client.Do(req, res); err != nil {
+		return nil, err
+	}
+	if res.StatusCode() != fasthttp.StatusOK {
+		return nil, fmt.Errorf("unexpected status code '%d'", res.StatusCode())
+	}
+	return res.Body(), nil
+}
+
+func checkCanonicalDomain(targetOwner, targetRepo, targetBranch, actualDomain, mainDomainSuffix, giteaRoot, giteaAPIToken string, canonicalDomainCache cache.SetGetKey) (string, bool) {
+	var (
+		domains []string
+		valid   bool
+	)
 	if cachedValue, ok := canonicalDomainCache.Get(targetOwner + "/" + targetRepo + "/" + targetBranch); ok {
 		domains = cachedValue.([]string)
 		for _, domain := range domains {
@@ -21,13 +46,10 @@ func CheckCanonicalDomain(targetOwner, targetRepo, targetBranch, actualDomain, m
 			}
 		}
 	} else {
-		req := fasthttp.AcquireRequest()
-		req.SetRequestURI(giteaRoot + "/api/v1/repos/" + targetOwner + "/" + targetRepo + "/raw/" + targetBranch + canonicalDomainConfig + "?access_token=" + giteaAPIToken)
-		res := fasthttp.AcquireResponse()
 
-		err := client.Do(req, res)
-		if err == nil && res.StatusCode() == fasthttp.StatusOK {
-			for _, domain := range strings.Split(string(res.Body()), "\n") {
+		body, err := giteaRawContent(giteaRoot, targetRepo, targetBranch, giteaRoot, giteaAPIToken, canonicalDomainConfig)
+		if err == nil {
+			for _, domain := range strings.Split(string(body), "\n") {
 				domain = strings.ToLower(domain)
 				domain = strings.TrimSpace(domain)
 				domain = strings.TrimPrefix(domain, "http://")
diff --git a/server/upstream/helper.go b/server/upstream/helper.go
index b5ee77a..c0e759e 100644
--- a/server/upstream/helper.go
+++ b/server/upstream/helper.go
@@ -29,7 +29,7 @@ func GetBranchTimestamp(owner, repo, branch, giteaRoot, giteaApiToken string, br
 		// Get default branch
 		var body = make([]byte, 0)
 		// TODO: use header for API key?
-		status, body, err := fasthttp.GetTimeout(body, giteaRoot+"/api/v1/repos/"+owner+"/"+repo+"?access_token="+giteaApiToken, 5*time.Second)
+		status, body, err := fasthttp.GetTimeout(body, giteaRoot+giteaApiRepos+owner+"/"+repo+"?access_token="+giteaApiToken, 5*time.Second)
 		if err != nil || status != 200 {
 			_ = branchTimestampCache.Set(owner+"/"+repo+"/"+branch, nil, defaultBranchCacheTimeout)
 			return nil
@@ -38,7 +38,7 @@ func GetBranchTimestamp(owner, repo, branch, giteaRoot, giteaApiToken string, br
 	}
 
 	var body = make([]byte, 0)
-	status, body, err := fasthttp.GetTimeout(body, giteaRoot+"/api/v1/repos/"+owner+"/"+repo+"/branches/"+branch+"?access_token="+giteaApiToken, 5*time.Second)
+	status, body, err := fasthttp.GetTimeout(body, giteaRoot+giteaApiRepos+owner+"/"+repo+"/branches/"+branch+"?access_token="+giteaApiToken, 5*time.Second)
 	if err != nil || status != 200 {
 		return nil
 	}
diff --git a/server/upstream/upstream.go b/server/upstream/upstream.go
index 88d3471..133d6fe 100644
--- a/server/upstream/upstream.go
+++ b/server/upstream/upstream.go
@@ -89,7 +89,7 @@ func (o *Options) Upstream(ctx *fasthttp.RequestCtx, giteaRoot, giteaAPIToken st
 		cachedResponse = cachedValue.(fileResponse)
 	} else {
 		req = fasthttp.AcquireRequest()
-		req.SetRequestURI(giteaRoot + "/api/v1/repos/" + uri + "?access_token=" + giteaAPIToken)
+		req.SetRequestURI(giteaRoot + giteaApiRepos + uri + "?access_token=" + giteaAPIToken)
 		res = fasthttp.AcquireResponse()
 		res.SetBodyStream(&strings.Reader{}, -1)
 		err = client.Do(req, res)