$ git clone -n https://src.fedoraproject.org/rpms/thunderbird.git /var/lib/mock/f33-build-224426-48451/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/f33-build-224426-48451/root/chroot_tmpdir/scmroot/thunderbird'...
$ git reset --hard 9834f58e197860b6066c48aef1cbeebe13559cc2
HEAD is now at 9834f58 Removed gconf-2.0 build requirement, added perl-interpreter instead