$ git clone -n https://src.fedoraproject.org/rpms/obfs4.git /var/lib/mock/f31-build-107703-33720/root/chroot_tmpdir/scmroot/obfs4
Cloning into '/var/lib/mock/f31-build-107703-33720/root/chroot_tmpdir/scmroot/obfs4'...
$ git reset --hard f3160b654810a98731aed03e84cbc1bdc3bfe729
HEAD is now at f3160b6 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild