$ git clone -n https://src.fedoraproject.org/rpms/python-BTrees.git /var/lib/mock/f31-build-93363-32397/root/chroot_tmpdir/scmroot/python-BTrees
Cloning into '/var/lib/mock/f31-build-93363-32397/root/chroot_tmpdir/scmroot/python-BTrees'...
$ git reset --hard deb201f84c7783afacfda874223efd09a700eae2
HEAD is now at deb201f New upstream version.