$ git clone -n https://src.fedoraproject.org/rpms/buffer.git /var/lib/mock/f31-build-56249-28204/root/chroot_tmpdir/scmroot/buffer
Cloning into '/var/lib/mock/f31-build-56249-28204/root/chroot_tmpdir/scmroot/buffer'...
$ git reset --hard cf2e408e2359f1dc6e84a40c47dfbdb588e7f562
HEAD is now at cf2e408 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild