fix install target

ober

f4f4d7af4a920fd716eb889dd63ee5b7d0d22864

diff --git a/Makefile b/Makefile
index 5be88a9..36ab22c 100644
--- a/Makefile
+++ b/Makefile
@@ -136,7 +136,7 @@ install: binary
 	mkdir -p "$(BIN_DIR)"
 	install -m 0755 "$(BIN)" "$(BIN_DIR)/gitsafe"
 	cmp "$(BIN)" "$(BIN_DIR)/gitsafe"
-	test "$$($(BIN) --version)" = "$$($(BIN_DIR)/gitsafe --version)"
+	test "$$($(CURDIR)/$(BIN) --version)" = "$$($(BIN_DIR)/gitsafe --version)"
 	mkdir -p "$(HOOK_DIR)"
 	@for hook in pre-commit pre-push; do \
 	  path="$(HOOK_DIR)/$$hook"; \