$ git clone -n https://src.fedoraproject.org/rpms/autoconf.git /var/lib/mock/f40-build-2586251-62437/root/chroot_tmpdir/scmroot/autoconf
Cloning into '/var/lib/mock/f40-build-2586251-62437/root/chroot_tmpdir/scmroot/autoconf'...
$ git fetch origin c8f3490d98dce1e4ef4ef93acf2d94a3a63575ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/autoconf
 * [new ref]         c8f3490d98dce1e4ef4ef93acf2d94a3a63575ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8f3490 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild