$ git clone -n https://src.fedoraproject.org/rpms/unlambda.git /var/lib/mock/f31-build-92929-32390/root/thebuilddir/tmp/scmroot/unlambda
Cloning into '/var/lib/mock/f31-build-92929-32390/root/thebuilddir/tmp/scmroot/unlambda'...
$ git reset --hard 70df56c8a855055698c086fa02aa5445b8d5aea4
HEAD is now at 70df56c BR prof for lib and static for executable