$ git clone -n https://src.fedoraproject.org/rpms/golang-github-d2g-dhcp4server.git /var/lib/mock/f38-build-side-42-init-devel-704594-27088/root/chroot_tmpdir/scmroot/golang-github-d2g-dhcp4server
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-704594-27088/root/chroot_tmpdir/scmroot/golang-github-d2g-dhcp4server'...
$ git fetch origin d9053c7a61564b296527934119b7d8eab7a1bbf0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-d2g-dhcp4server
 * [new ref]         d9053c7a61564b296527934119b7d8eab7a1bbf0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9053c7 Fix FTBFS (rhbz#2045489).