diff --git a/build/ci.go b/build/ci.go
index 29a80dca5e..f5d5b53e32 100644
--- a/build/ci.go
+++ b/build/ci.go
@@ -54,7 +54,6 @@ import (
 	"time"
 
 	"github.com/cespare/cp"
-	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto/signify"
 	"github.com/ethereum/go-ethereum/internal/build"
 	"github.com/ethereum/go-ethereum/params"
@@ -144,7 +143,7 @@ func executablePath(name string) string {
 func main() {
 	log.SetFlags(log.Lshortfile)
 
-	if !common.FileExist(filepath.Join("build", "ci.go")) {
+	if !build.FileExist(filepath.Join("build", "ci.go")) {
 		log.Fatal("this script must be run from the root of the repository")
 	}
 	if len(os.Args) < 2 {
@@ -352,8 +351,8 @@ func downloadSpecTestFixtures(csdb *build.ChecksumDB, cachedir string) string {
 // hashAllSourceFiles iterates all files under the top-level project directory
 // computing the hash of each file (excluding files within the tests
 // subrepo)
-func hashAllSourceFiles() (map[string]common.Hash, error) {
-	res := make(map[string]common.Hash)
+func hashAllSourceFiles() (map[string][32]byte, error) {
+	res := make(map[string][32]byte)
 	err := filepath.WalkDir(".", func(path string, d os.DirEntry, err error) error {
 		if strings.HasPrefix(path, filepath.FromSlash("tests/testdata")) {
 			return filepath.SkipDir
@@ -370,7 +369,7 @@ func hashAllSourceFiles() (map[string]common.Hash, error) {
 		if _, err := io.Copy(hasher, f); err != nil {
 			return err
 		}
-		res[path] = common.Hash(hasher.Sum(nil))
+		res[path] = [32]byte(hasher.Sum(nil))
 		return nil
 	})
 	if err != nil {
@@ -381,8 +380,8 @@ func hashAllSourceFiles() (map[string]common.Hash, error) {
 
 // hashSourceFiles iterates the provided set of filepaths (relative to the top-level geth project directory)
 // computing the hash of each file.
-func hashSourceFiles(files []string) (map[string]common.Hash, error) {
-	res := make(map[string]common.Hash)
+func hashSourceFiles(files []string) (map[string][32]byte, error) {
+	res := make(map[string][32]byte)
 	for _, filePath := range files {
 		f, err := os.OpenFile(filePath, os.O_RDONLY, 0666)
 		if err != nil {
@@ -392,14 +391,14 @@ func hashSourceFiles(files []string) (map[string]common.Hash, error) {
 		if _, err := io.Copy(hasher, f); err != nil {
 			return nil, err
 		}
-		res[filePath] = common.Hash(hasher.Sum(nil))
+		res[filePath] = [32]byte(hasher.Sum(nil))
 	}
 	return res, nil
 }
 
 // compareHashedFilesets compares two maps (key is relative file path to top-level geth directory, value is its hash)
 // and returns the list of file paths whose hashes differed.
-func compareHashedFilesets(preHashes map[string]common.Hash, postHashes map[string]common.Hash) []string {
+func compareHashedFilesets(preHashes map[string][32]byte, postHashes map[string][32]byte) []string {
 	updates := []string{}
 	for path, postHash := range postHashes {
 		preHash, ok := preHashes[path]
@@ -442,7 +441,7 @@ func doGenerate() {
 	protocPath := downloadProtoc(*cachedir)
 	protocGenGoPath := downloadProtocGenGo(*cachedir)
 
-	var preHashes map[string]common.Hash
+	var preHashes map[string][32]byte
 	if *verify {
 		var err error
 		preHashes, err = hashAllSourceFiles()
@@ -915,7 +914,7 @@ func ppaUpload(workdir, ppa, sshUser string, files []string) {
 	var idfile string
 	if sshkey := getenvBase64("PPA_SSH_KEY"); len(sshkey) > 0 {
 		idfile = filepath.Join(workdir, "sshkey")
-		if !common.FileExist(idfile) {
+		if !build.FileExist(idfile) {
 			os.WriteFile(idfile, sshkey, 0600)
 		}
 	}
diff --git a/common/path.go b/common/path.go
index c1e382fd29..49c6a5efc2 100644
--- a/common/path.go
+++ b/common/path.go
@@ -27,7 +27,6 @@ func FileExist(filePath string) bool {
 	if err != nil && os.IsNotExist(err) {
 		return false
 	}
-
 	return true
 }
 
diff --git a/internal/build/file.go b/internal/build/file.go
new file mode 100644
index 0000000000..c159b51892
--- /dev/null
+++ b/internal/build/file.go
@@ -0,0 +1,28 @@
+// Copyright 2024 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package build
+
+import "os"
+
+// FileExist checks if a file exists at path.
+func FileExist(path string) bool {
+	_, err := os.Stat(path)
+	if err != nil && os.IsNotExist(err) {
+		return false
+	}
+	return true
+}