$ git clone -n https://git.cclinux.org/stage/rpms/thunderbird.git /var/lib/mock/dist-circle8-updates-build-43440-8725/root/chroot_tmpdir/scmroot/thunderbird
Cloning into '/var/lib/mock/dist-circle8-updates-build-43440-8725/root/chroot_tmpdir/scmroot/thunderbird'...
$ git reset --hard cec1347c1e8c85f575c338bd3c552dcc5e8d06d6
HEAD is now at cec1347 import thunderbird-91.3.0-2.el8_4