You should edit your sources.list , by adding the following line:
deb http://ftp.ca.debian.org/debian/ jessie main contrib
Then upgrade your package and install git:
apt-get update && apt-get upgrade && apt-get dist-upgrade apt-get -f install apt-get install git nJoy ;-)
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The following package git , liberror-perl and [rsync]3 can be downloaded from the mainrepo , because you don’t have the main repo on your sources.list you cannot install git and its dependencies .
Your sources.list should be (with non-free packages):
deb http://ftp.ca.debian.org/debian/ jessie main contrib non-free deb-src http://ftp.ca.debian.org/debian/ jessie main contrib non-free deb http://security.debian.org/ jessie/updates main contrib non-free deb-src http://security.debian.org/ jessie/updates main contrib non-free deb http://ftp.ca.debian.org/debian/ jessie-updates main contrib non-free deb-src http://ftp.ca.debian.org/debian/ jessie-updates main contrib non-free deb http://ftp.ca.debian.org/debian/ jessie-backports main contrib non-free njoy ;-)