$ git clone -n https://src.fedoraproject.org/rpms/golang-github-emersion-milter.git /var/lib/mock/f40-build-2000263-44444/root/chroot_tmpdir/scmroot/golang-github-emersion-milter
Cloning into '/var/lib/mock/f40-build-2000263-44444/root/chroot_tmpdir/scmroot/golang-github-emersion-milter'...
$ git fetch origin 492a1fc1ce59925947e069f808d55d4088270ed4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-emersion-milter
 * [new ref]         492a1fc1ce59925947e069f808d55d4088270ed4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 492a1fc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild