apt-cache show出力に表示されるパッケージのDebianブランチを識別する方法`？

などtestingのDebianブランチからパッケージをインストールしたいと思います。tmuxgit

だから私はAPTを設定しましたが、testingそれをmainデフォルトとして使用しました。

nlykkei@debian-parallels ~ $ cat /etc/apt/sources.list.d/testing.list
deb http://deb.debian.org/debian/ testing main
deb-src http://deb.debian.org/debian/ testing main
nlykkei@debian-parallels ~ $ cat /etc/apt/preferences.d/testing.pref
Package: *
Pin: release a=testing
Pin-Priority: 100

tmux利用可能なバージョンを確認すると、すべてのバージョンが3.1-c1表示2.8-3されます。この場合は明らかに3.1c-1から来たtestingのですが、より複雑な出力でどのように識別しますか？

にapt-get install -t <branch> <pkg>...設定された支店名が必要です。Pin-Priority: 990<branch>

apt-cache show:

nlykkei@debian-parallels ~ $ apt-cache show tmux
Package: tmux
Version: 3.1c-1
Installed-Size: 830
Maintainer: Romain Francoise <[email protected]>
Architecture: amd64
Depends: libc6 (>= 2.27), libevent-2.1-7 (>= 2.1.8-stable), libtinfo6 (>= 6), libutempter0 (>= 1.1.5)
Description-en: terminal multiplexer
 tmux enables a number of terminals (or windows) to be accessed and
 controlled from a single terminal like screen. tmux runs as a
 server-client system. A server is created automatically when necessary
 and holds a number of sessions, each of which may have a number of
 windows linked to it. Any number of clients may connect to a session,
 or the server may be controlled by issuing commands with tmux.
 Communication takes place through a socket, by default placed in /tmp.
 Moreover tmux provides a consistent and well-documented command
 interface, with the same syntax whether used interactively, as a key
 binding, or from the shell. It offers a choice of vim or Emacs key
 layouts.
Description-md5: dc6ff920cb9183a42694d0ea54835078
Homepage: https://tmux.github.io/
Tag: hardware::input:keyboard, implemented-in::c, interface::text-mode,
 role::program, scope::application, works-with::software:running
Section: admin
Priority: optional
Filename: pool/main/t/tmux/tmux_3.1c-1_amd64.deb
Size: 362376
MD5sum: e0be6f85c58a244108eab29c9ee629cf
SHA256: 037f2f1f55c72e75e155cb54cdd9c41f4ac7575cef50a1427383b043cc8316e0

Package: tmux
Version: 2.8-3
Installed-Size: 681
Maintainer: Romain Francoise <[email protected]>
Architecture: amd64
Depends: libc6 (>= 2.27), libevent-2.1-6 (>= 2.1.8-stable), libtinfo6 (>= 6), libutempter0 (>= 1.1.5)
Description-en: terminal multiplexer
 tmux enables a number of terminals (or windows) to be accessed and
 controlled from a single terminal like screen. tmux runs as a
 server-client system. A server is created automatically when necessary
 and holds a number of sessions, each of which may have a number of
 windows linked to it. Any number of clients may connect to a session,
 or the server may be controlled by issuing commands with tmux.
 Communication takes place through a socket, by default placed in /tmp.
 Moreover tmux provides a consistent and well-documented command
 interface, with the same syntax whether used interactively, as a key
 binding, or from the shell. It offers a choice of vim or Emacs key
 layouts.
Description-md5: dc6ff920cb9183a42694d0ea54835078
Homepage: https://tmux.github.io/
Tag: hardware::input:keyboard, implemented-in::c, interface::text-mode,
 role::program, scope::application, works-with::software:running
Section: admin
Priority: optional
Filename: pool/main/t/tmux/tmux_2.8-3_amd64.deb
Size: 302084
MD5sum: 17d694a86ec7b0f46ac6ff60e0d843ff
SHA256: 9c247aef3c3c09d982d49a14091209d76bd06a3d2e699fc9d60ddcee203b456a

apt-cache policy:

nlykkei@debian-parallels ~ $ apt-cache policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 100 http://deb.debian.org/debian testing/main amd64 Packages
     release o=Debian,a=testing,n=bullseye,l=Debian,c=main,b=amd64
     origin deb.debian.org
 500 http://deb.debian.org/debian buster-updates/main amd64 Packages
     release o=Debian,a=stable-updates,n=buster-updates,l=Debian,c=main,b=amd64
     origin deb.debian.org
 500 http://security.debian.org/debian-security buster/updates/main amd64 Packages
     release v=10,o=Debian,a=stable,n=buster,l=Debian-Security,c=main,b=amd64
     origin security.debian.org
 500 http://deb.debian.org/debian buster/main amd64 Packages
     release v=10.9,o=Debian,a=stable,n=buster,l=Debian,c=main,b=amd64
     origin deb.debian.org
Pinned packages:

修正する:

tmux:
  Installed: 3.1c-1~bpo10+1
  Candidate: 3.1c-1~bpo10+1
  Version table:
 *** 3.1c-1~bpo10+1 100
        100 http://deb.debian.org/debian buster-backports/main amd64 Packages
        100 /var/lib/dpkg/status
     2.8-3 990
        990 http://deb.debian.org/debian buster/main amd64 Packages