--- a/debian/patches/reproducible-build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/reproducible-build.patch	2020-06-19 11:09:53.187101587 +0100
@@ -0,0 +1,17 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2020-06-19
+
+--- petitboot-13.05.29.14.00-g4dc604b.orig/bootstrap
++++ petitboot-13.05.29.14.00-g4dc604b/bootstrap
+@@ -27,6 +27,10 @@ elif head=$(git rev-parse --short --veri
+ 	if git diff-index HEAD | read dummy; then
+ 		version=`printf '%s%s' ${version} -dirty`
+ 	fi
++elif test -n "${SOURCE_DATE_EPOCH}"; then
++	# Use SOURCE_DATE_EPOCH <https://reproducible-builds.org/specs/source-date-epoch/>
++
++	version="dev-$(date --utc --date="@${SOURCE_DATE_EPOCH}" +%y.%m.%d-%H.%M.%S)"
+ else
+ 	# Default to current date and time.
+ 
--- a/debian/patches/series	2020-06-19 10:58:14.090474738 +0100
--- b/debian/patches/series	2020-06-19 11:05:54.918183177 +0100
@@ -1 +1,2 @@
 fix-automake-warnings.patch
+reproducible-build.patch