$ git clone -n https://src.fedoraproject.org/rpms/memchan.git /var/lib/mock/f31-build-51822-27556/root/chroot_tmpdir/scmroot/memchan
Cloning into '/var/lib/mock/f31-build-51822-27556/root/chroot_tmpdir/scmroot/memchan'...
$ git reset --hard d6710322c00c8d20a5a2e221194dc56d3f39fd35
HEAD is now at d671032 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild