$ git clone -n https://src.fedoraproject.org/rpms/samplv1.git /var/lib/mock/f40-build-796712-140843/root/chroot_tmpdir/scmroot/samplv1
Cloning into '/var/lib/mock/f40-build-796712-140843/root/chroot_tmpdir/scmroot/samplv1'...
$ git fetch origin d76540a5cfb0254c599e888ded1469e5b09bb213:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/samplv1
 * [new ref]         d76540a5cfb0254c599e888ded1469e5b09bb213 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d76540a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild