thierry@modemcable050:~$ dchroot -c mychroot -d
Executing shell in 'mychroot' chroot.
thierry@modemcable050:~$ apt-get source geg
Reading package lists... Done
Building dependency tree... Done
Need to get 74.2kB of source archives.
Err http://us.archive.ubuntu.com dapper/universe geg 1.0.2-5 (dsc)
  Could not open file geg_1.0.2-5.dsc - open (13 Permission denied)
Err http://us.archive.ubuntu.com dapper/universe geg 1.0.2-5 (tar)
  Could not open file geg_1.0.2.orig.tar.gz - open (13 Permission denied)
Err http://us.archive.ubuntu.com dapper/universe geg 1.0.2-5 (diff)
  Could not open file geg_1.0.2-5.diff.gz - open (13 Permission denied)
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/universe/g/geg/geg_1.0.2-5.dsc  Could not open file geg_1.0.2-5.dsc - open (13 Permission denied)
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/universe/g/geg/geg_1.0.2.orig.tar.gz  Could not open file geg_1.0.2.orig.tar.gz - open (13 Permission denied)
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/universe/g/geg/geg_1.0.2-5.diff.gz  Could not open file geg_1.0.2-5.diff.gz - open (13 Permission denied)
E: Failed to fetch some archives.