Index: sys/conf/newvers.sh
===================================================================
--- sys/conf/newvers.sh
+++ sys/conf/newvers.sh
@@ -51,6 +51,17 @@
 		${SYSDIR}/sys/param.h)
 fi
 
+REPRODUCIBLE=
+
+while getopts R opt; do
+case "$opt" in
+R)
+	REPRODUCIBLE=1
+	;;
+esac
+done
+shift $(($OPTIND - 1))
+
 b=share/examples/etc/bsd-style-copyright
 if [ -r "${SYSDIR}/../COPYRIGHT" ]; then
 	year=$(sed -Ee '/^Copyright .* The FreeBSD Project/!d;s/^.*1992-([0-9]*) .*$/\1/g' ${SYSDIR}/../COPYRIGHT)
@@ -220,10 +231,16 @@
 	fi
 fi
 
+if [ $REPRODUCIBLE ]; then
+	VERSTR="${VERSION} #${v}${svn}${git}${hg}${p4version}\\n"
+else
+	VERSTR="${VERSION} #${v}${svn}${git}${hg}${p4version}: ${t}\\n    ${u}@${h}:${d}\\n"
+fi
+
 cat << EOF > vers.c
 $COPYRIGHT
 #define SCCSSTR "@(#)${VERSION} #${v}${svn}${git}${hg}${p4version}: ${t}"
-#define VERSTR "${VERSION} #${v}${svn}${git}${hg}${p4version}: ${t}\\n    ${u}@${h}:${d}\\n"
+#define VERSTR "${VERSTR}"
 #define RELSTR "${RELEASE}"
 
 char sccs[sizeof(SCCSSTR) > 128 ? sizeof(SCCSSTR) : 128] = SCCSSTR;