pkg/bisect: don't overwrite user configuration
pkg/bisect: don't overwrite user configuration

We don't own this object and should not touch,
it may be unexpected by the caller and may cause data races.

xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,google/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller