$ git clone -n https://src.fedoraproject.org/rpms/golang-github-gliderlabs-ssh.git /var/lib/mock/f40-build-2000454-44468/root/chroot_tmpdir/scmroot/golang-github-gliderlabs-ssh
Cloning into '/var/lib/mock/f40-build-2000454-44468/root/chroot_tmpdir/scmroot/golang-github-gliderlabs-ssh'...
$ git fetch origin 33f0379eb486faf4188c1e5490bdf88d1ed61d40:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-gliderlabs-ssh
 * [new ref]         33f0379eb486faf4188c1e5490bdf88d1ed61d40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33f0379 Update to 0.3.5 - Closes rhbz#2123410