RASPBIAN JESSIE: I recently did a full update and then upgrade of apt. So eventhing was up to date. I then decided I needed some advance s/w and hence uncommented this line in /etc/apt/sources.list to get a stretch repo.
#deb http://archive.raspbian.org/raspbian/ stretch main
I then ran: $ sudo apt-get update
I then decided I did not want the advanced s/w from this new source. So I commented the line again Re-ran the update command, I do not think it did anything, upgradable seems the same.
Below is the result of listing my upgradable, I am worried all these will upgrade when really everything is upgraded and I do not want anything additional.
I am currently on Jessie are all these upgrades Jessie?
upgradable list:
$ apt list --upgradable
Listing... Done
apt-transport-https/oldoldstable 1.0.9.8.5 armhf [upgradable from: 1.0.9.8.4]
apt-utils/oldoldstable 1.0.9.8.5 armhf [upgradable from: 1.0.9.8.4]
bind9-host/oldoldstable 1:9.9.5.dfsg-9+deb8u18 armhf [upgradable from: 1:9.9.5.dfsg-9+deb8u13]
ca-certificates/oldoldstable 20141019+deb8u4 all [upgradable from: 20141019+deb8u3]
cpio/oldoldstable 2.11+dfsg-4.1+deb8u2 armhf [upgradable from: 2.11+dfsg-4.1+deb8u1]
icedtea-7-jre-jamvm/oldoldstable 7u241-2.6.20-1~deb8u1+rpi1 armhf [upgradable from: 7u151-2.6.11-1~deb8u1+rpi1]
isc-dhcp-client/oldoldstable 4.3.1-6+deb8u4 armhf [upgradable from: 4.3.1-6+deb8u2]
isc-dhcp-common/oldoldstable 4.3.1-6+deb8u4 armhf [upgradable from: 4.3.1-6+deb8u2]
libbind9-90/oldoldstable 1:9.9.5.dfsg-9+deb8u18 armhf [upgradable from: 1:9.9.5.dfsg-9+deb8u13]
libdns100/oldoldstable 1:9.9.5.dfsg-9+deb8u18 armhf [upgradable from: 1:9.9.5.dfsg-9+deb8u13]
libglib2.0-data/oldoldstable 2.42.1-1+deb8u3 all [upgradable from: 2.42.1-1]
libio-socket-ssl-perl/oldoldstable 2.002-2+deb8u3 all [upgradable from: 2.002-2+deb8u2]
libisc95/oldoldstable 1:9.9.5.dfsg-9+deb8u18 armhf [upgradable from: 1:9.9.5.dfsg-9+deb8u13]
libisccc90/oldoldstable 1:9.9.5.dfsg-9+deb8u18 armhf [upgradable from: 1:9.9.5.dfsg-9+deb8u13]
libisccfg90/oldoldstable 1:9.9.5.dfsg-9+deb8u18 armhf [upgradable from: 1:9.9.5.dfsg-9+deb8u13]
libjs-jquery/oldoldstable 1.7.2+dfsg-3.2+deb8u7 all [upgradable from: 1.7.2+dfsg-3.2]
liblwres90/oldoldstable 1:9.9.5.dfsg-9+deb8u18 armhf [upgradable from: 1:9.9.5.dfsg-9+deb8u13]
libsasl2-modules/oldoldstable 2.1.26.dfsg1-13+deb8u2 armhf [upgradable from: 2.1.26.dfsg1-13+deb8u1]
mumble-server/oldoldstable 1.2.8-2+deb8u1 armhf [upgradable from: 1.2.8-2]
ncurses-term/oldoldstable 5.9+20140913-1+deb8u3 all [upgradable from: 5.9+20140913-1]
nfs-common/oldoldstable 1:1.2.8-9+deb8u1 armhf [upgradable from: 1:1.2.8-9]
nfs-kernel-server/oldoldstable 1:1.2.8-9+deb8u1 armhf [upgradable from: 1:1.2.8-9]
openjdk-7-jre-headless/oldoldstable 7u241-2.6.20-1~deb8u1+rpi1 armhf [upgradable from: 7u151-2.6.11-1~deb8u1+rpi1]
opensc/oldoldstable 0.16.0-3+deb8u2 armhf [upgradable from: 0.14.0-2]
opensc-pkcs11/oldoldstable 0.16.0-3+deb8u2 armhf [upgradable from: 0.14.0-2]
openssl/oldoldstable 1.0.1t-1+deb8u12 armhf [upgradable from: 1.0.1t-1+deb8u7]
patch/oldoldstable 2.7.5-1+deb8u3 armhf [upgradable from: 2.7.5-1]
python-apt/oldoldstable 0.9.3.13 armhf [upgradable from: 0.9.3.12]
python-apt-common/oldoldstable 0.9.3.13 all [upgradable from: 0.9.3.12]
python-libxml2/oldoldstable 2.9.1+dfsg1-5+deb8u8 armhf [upgradable from: 2.9.1+dfsg1-5+deb8u5]
python-openssl/oldoldstable 0.14-1 armhf [upgradable from: 0.13.1-2]
python-xdg/oldoldstable 0.25-4+deb8u1 all [upgradable from: 0.25-4]
python3-apt/oldoldstable 0.9.3.13 armhf [upgradable from: 0.9.3.12]
rsync/oldoldstable 3.1.1-3+deb8u2 armhf [upgradable from: 3.1.1-3]
rsyslog/oldoldstable 8.4.2-1+deb8u3 armhf [upgradable from: 8.4.2-1+deb8u2]
sudo/oldoldstable 1.8.10p3-1+deb8u7 armhf [upgradable from: 1.8.10p3-1+deb8u4]
tzdata/oldoldstable 2019c-0+deb8u1 all [upgradable from: 2017b-0+deb8u1]
tzdata-java/oldoldstable 2019c-0+deb8u1 all [upgradable from: 2017b-0+deb8u1]
unifi/stable 5.12.35-12979-1 all [upgradable from: 5.6.22-10205]
unzip/oldoldstable 6.0-16+deb8u6 armhf [upgradable from: 6.0-16+deb8u3]
vim/oldoldstable 2:7.4.488-7+deb8u4 armhf [upgradable from: 2:7.4.488-7+deb8u3]
vim-common/oldoldstable 2:7.4.488-7+deb8u4 armhf [upgradable from: 2:7.4.488-7+deb8u3]
vim-runtime/oldoldstable 2:7.4.488-7+deb8u4 all [upgradable from: 2:7.4.488-7+deb8u3]
vim-tiny/oldoldstable 2:7.4.488-7+deb8u4 armhf [upgradable from: 2:7.4.488-7+deb8u3]
wget/oldoldstable 1.16-1+deb8u7 armhf [upgradable from: 1.16-1+deb8u4]
wpasupplicant/oldoldstable 2.3-1+deb8u9 armhf [upgradable from: 2.3-1+deb8u5]
xdg-utils/oldoldstable 1.1.0~rc1+git20111210-7.4+deb8u1 all [upgradable from: 1.1.0~rc1+git20111210-7.4]
apt update
?" etc.