$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mdlayher-socket.git /var/lib/mock/f45-build-12246-440/root/chroot_tmpdir/scmroot/golang-github-mdlayher-socket
Cloning into '/var/lib/mock/f45-build-12246-440/root/chroot_tmpdir/scmroot/golang-github-mdlayher-socket'...
$ git fetch origin 7c73316776a25d70be097a963803a52ab0277a19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mdlayher-socket
 * [new ref]         7c73316776a25d70be097a963803a52ab0277a19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c73316 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild