$ git clone -n https://src.fedoraproject.org/rpms/felix-parent.git /var/lib/mock/f40-build-2436883-60818/root/chroot_tmpdir/scmroot/felix-parent
Cloning into '/var/lib/mock/f40-build-2436883-60818/root/chroot_tmpdir/scmroot/felix-parent'...
$ git fetch origin 838e0f9af8457d0150acbf065e6328b46b8802e7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/felix-parent
 * [new ref]         838e0f9af8457d0150acbf065e6328b46b8802e7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 838e0f9 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild