$ git clone -n https://src.fedoraproject.org/rpms/golang-github-d2g-dhcp4client.git /var/lib/mock/f42-build-side-1-3588898-46951/root/chroot_tmpdir/scmroot/golang-github-d2g-dhcp4client
Cloning into '/var/lib/mock/f42-build-side-1-3588898-46951/root/chroot_tmpdir/scmroot/golang-github-d2g-dhcp4client'...
$ git fetch origin 0a09fbaa7349572a0d127eea7e85c3bec8ed60f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-d2g-dhcp4client
 * [new ref]         0a09fbaa7349572a0d127eea7e85c3bec8ed60f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a09fba Fix format errors