ci: need to make Git trust the repo inside CI builds

Signed-off-by: WANG Xuerui <[email protected]>

Author: xen0n

build.sh

@@ -56,6 +56,7 @@ trap _cleanup EXIT
 main() {
     mkdir -p "$OUT_DIR"
 
+    ensure_git_safety
     dump_config
     init_source_epoch
     provision_loong_rootfs "$ROOTFS_IMAGE_TAG" "$ROOTFS_DIR"

scripts/_utils.sh

@@ -1,5 +1,6 @@
 # this file is meant to be sourced
 
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 _IMAGE_TAG_PREFIX="ghcr.io/loongson-community"
 
 builder_image_tag() {
@@ -65,6 +66,15 @@ echo_kv() {
     echo "$(_term yellow)${k}: $(_term cyan)$@$(_term reset)"
 }
 
+ensure_git_safety() {
+    [[ -n $CI ]] || return 0
+    [[ -O "$REPO_ROOT" ]] && return 0
+
+    group "telling Git to consider the repo as safe"
+    git config --global --add safe.directory "$REPO_ROOT"
+    endgroup
+}
+
 get_commit_time() {
   TZ=UTC0 git log -1 \
     --format='tformat:%cd' \