From 4b239f556030b48ce9a72cd2f4fbf380e7d7ba0f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C4=90o=C3=A0n=20Tr=E1=BA=A7n=20C=C3=B4ng=20Danh?=
 <congdanhqx@gmail.com>
Date: Tue, 28 Sep 2021 21:43:51 +0700
Subject: [PATCH] setup/git.sh: parser GIT_COMMITTER_DATE with plumbing command

To avoid:
- Commit's signature
- Future change in git log format
- Revision Walk

Close #33165
---
 common/environment/setup/git.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/common/environment/setup/git.sh b/common/environment/setup/git.sh
index 4b352fe5387..80bbc13e3fd 100644
--- a/common/environment/setup/git.sh
+++ b/common/environment/setup/git.sh
@@ -17,7 +17,8 @@ elif [ -z "${SOURCE_DATE_EPOCH}" ]; then
 	if [ -n "$basepkg" -a -z "$($XBPS_GIT_CMD -C ${XBPS_SRCPKGDIR}/${basepkg} ls-files template)" ]; then
 		export SOURCE_DATE_EPOCH="$(stat -c %Y ${XBPS_SRCPKGDIR}/${basepkg}/template)"
 	else
-		export SOURCE_DATE_EPOCH="$($XBPS_GIT_CMD -C ${XBPS_DISTDIR} log --pretty='%ct' -n1 HEAD)"
+		export SOURCE_DATE_EPOCH=$($XBPS_GIT_CMD cat-file commit HEAD |
+			sed -n '/^committer /{s/.*> \([0-9][0-9]*\) [-+][0-9].*/\1/p;q}')
 	fi
 fi