$ git clone -n https://src.fedoraproject.org/rpms/thunderbird.git /var/lib/mock/f33-build-501855-64312/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/f33-build-501855-64312/root/chroot_tmpdir/scmroot/thunderbird'...
$ git reset --hard 16c89a48ab9cb87fa92514495868c9722fe76396
HEAD is now at 16c89a4 Update to 78.6.1 build1