diff -Nru haskell-githash-0.1.3.1/debian/changelog haskell-githash-0.1.3.1/debian/changelog
--- haskell-githash-0.1.3.1/debian/changelog	2019-08-31 19:13:42.000000000 +0000
+++ haskell-githash-0.1.3.1/debian/changelog	2019-11-19 06:23:02.000000000 +0000
@@ -1,3 +1,9 @@
+haskell-githash (0.1.3.1-3+rpi1) bullseye-staging; urgency=medium
+
+  * Set GIT_AUTHOR_NAME and GIT_AUTHOR_EMAIL to prevent errors from git comit.
+
+ -- Peter Michael Green <plugwash@raspbian.org>  Tue, 19 Nov 2019 06:23:02 +0000
+
 haskell-githash (0.1.3.1-3) unstable; urgency=medium
 
   * Work around the weirdness of a testsuite that needs to be built
diff -Nru haskell-githash-0.1.3.1/debian/rules haskell-githash-0.1.3.1/debian/rules
--- haskell-githash-0.1.3.1/debian/rules	2019-08-31 19:13:42.000000000 +0000
+++ haskell-githash-0.1.3.1/debian/rules	2019-11-19 06:22:53.000000000 +0000
@@ -4,6 +4,8 @@
 DEB_SETUP_BIN_NAME = debian/hlibrary.setup
 DEB_CABAL_PACKAGE = githash
 DEB_DEFAULT_COMPILER = ghc
+export GIT_AUTHOR_EMAIL=invalid@invalid
+export GIT_AUTHOR_NAME=invalid
 
 include /usr/share/cdbs/1/rules/debhelper.mk
 include /usr/share/cdbs/1/class/hlibrary.mk