diff --git a/include/toplevel.mk b/include/toplevel.mk
index c90670bee6..77b04aea8a 100644
--- a/include/toplevel.mk
+++ b/include/toplevel.mk
@@ -23,6 +23,7 @@ HOSTCC ?= $(CC)
 export REVISION
 export SOURCE_DATE_EPOCH
 export GIT_CONFIG_PARAMETERS='core.autocrlf=false'
+export GIT_ASKPASS:=/bin/true
 export MAKE_JOBSERVER=$(filter --jobserver%,$(MAKEFLAGS))
 
 # prevent perforce from messing with the patch utility