$ git clone -n https://gitee.com/zhangxianting/thunderbird_2.git /var/lib/mock/dist-an7-updates-build-81720-41086/root/chroot_tmpdir/scmroot/thunderbird_2
Cloning into '/var/lib/mock/dist-an7-updates-build-81720-41086/root/chroot_tmpdir/scmroot/thunderbird_2'...
fatal: the remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed