loong64 buildd setup

[张家岭 <zhangjialing@loongson.cn>]

Hello,

    I wan't to setup a loong64 buildd , I run ` sbuild-createchroot 
--arch=loong64 unstable 
--keyring=/etc/apt/trusted.gpg.d/debian-ports-archive-2023.gpg 
/home/buildd/build/ http://ftp.ports.debian.org/debian-ports ` .

    I found the fakeroot is not in unstable , It is in unrelease now . 
Please how can I do now ?  hopefully someone can help .

the command output:

``` sbuild-createchroot --arch=loong64 unstable 
--keyring=/etc/apt/trusted.gpg.d/debian-ports-archive-2023.gpg 
/home/buildd/build/ http://ftp.ports.debian.org/debian-ports
I: SUITE: unstable
I: TARGET: /home/buildd/build
I: MIRROR: http://ftp.ports.debian.org/debian-ports
I: Running debootstrap --arch=loong64 --variant=buildd --verbose 
--include=fakeroot,build-essential --components=main 
--keyring=/etc/apt/trusted.gpg.d/debian-ports-archive-2023.gpg 
--resolve-deps unstable /home/buildd/build 
http://ftp.ports.debian.org/debian-ports
I: Can't verify that target arch works
I: Retrieving InRelease
I: Checking Release signature
I: Valid Release signature (key id D0C987D7BEC3EDDF89486CC2B523E5F3FC4E5F2C)
I: Retrieving Packages
I: Validating Packages
I: Resolving dependencies of required packages...
I: Resolving dependencies of base packages...
I: Checking component main on http://ftp.ports.debian.org/debian-ports...
E: Couldn't find these debs: fakeroot
E: Error running debootstrap at /usr/bin/sbuild-createchroot line 438.

```