do not let git_path clobber errno when reporting errors

diff --git a/git-bisect.sh b/git-bisect.sh
index 2524060475ef369c0b9a4641aa88dc2ad6083da4..99efbe884528ffa730d6c0297e20d9de93d5ad9e 100755 (executable)
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -126,7 +126,8 @@ bisect_start() {
                start_head=$(cat "$GIT_DIR/BISECT_START")
                if test "z$mode" != "z--no-checkout"
                then
-                       git checkout "$start_head" --
+                       git checkout "$start_head" -- ||
+                       die "$(eval_gettext "Checking out '\$start_head' failed. Try 'git bisect reset <validbranch>'.")"
                fi
        else
                # Get rev from where we start.