$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mdlayher-ethernet.git /var/lib/mock/f45-build-12233-440/root/chroot_tmpdir/scmroot/golang-github-mdlayher-ethernet
Cloning into '/var/lib/mock/f45-build-12233-440/root/chroot_tmpdir/scmroot/golang-github-mdlayher-ethernet'...
$ git fetch origin fdf63a71c8978ce57dfdbe100cf390098950ba4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mdlayher-ethernet
 * [new ref]         fdf63a71c8978ce57dfdbe100cf390098950ba4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdf63a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild