$ git clone -n https://src.fedoraproject.org/rpms/thunderbird.git /var/lib/mock/f33-build-361038-60199/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/f33-build-361038-60199/root/chroot_tmpdir/scmroot/thunderbird'...
$ git reset --hard 4d99afa69b0e578cd0593a918d8c0c71a338e272
HEAD is now at 4d99afa Disabled s390x due to https://bugzilla.redhat.com/show_bug.cgi?id=1886672