$ git clone -n https://src.fedoraproject.org/rpms/cproto.git /var/lib/mock/f41-build-830701-156719/root/chroot_tmpdir/scmroot/cproto
Cloning into '/var/lib/mock/f41-build-830701-156719/root/chroot_tmpdir/scmroot/cproto'...
$ git fetch origin bdc60b76dbdb18807f98fee26122866a10e88ae9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cproto
 * [new ref]         bdc60b76dbdb18807f98fee26122866a10e88ae9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdc60b7 - Update to 4.7w fixes rhbz#2297818