$ git clone -n https://src.fedoraproject.org/rpms/tumbler.git /var/lib/mock/f31-build-70534-30504/root/thebuilddir/tmp/scmroot/tumbler
Cloning into '/var/lib/mock/f31-build-70534-30504/root/thebuilddir/tmp/scmroot/tumbler'...
$ git reset --hard 5511e29c7b65c274e5ff6b3d23295fd00bef622c
HEAD is now at 5511e29 Update to 0.2.6