$ git clone -n https://src.fedoraproject.org/rpms/golang-github-j-keck-arping.git /var/lib/mock/f45-build-12073-437/root/chroot_tmpdir/scmroot/golang-github-j-keck-arping
Cloning into '/var/lib/mock/f45-build-12073-437/root/chroot_tmpdir/scmroot/golang-github-j-keck-arping'...
$ git fetch origin 73bac01922fd1f2e08792a48576433e5c32fe3a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-j-keck-arping
 * [new ref]         73bac01922fd1f2e08792a48576433e5c32fe3a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73bac01 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild