$ git clone -n https://src.fedoraproject.org/rpms/python-BTrees.git /var/lib/mock/f33-build-301409-56764/root/chroot_tmpdir/scmroot/python-BTrees
Cloning into '/var/lib/mock/f33-build-301409-56764/root/chroot_tmpdir/scmroot/python-BTrees'...
$ git reset --hard 91efb368b18b44cea92736b12d8c4b214275e618
HEAD is now at 91efb36 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild