syz-fuzzer: fix revision checking in case executor is wrapped with ssh
syz-fuzzer: fix revision checking in case executor is wrapped with ssh

Some ssh close connection on stdin eof. So give it a pipe.

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