$ git clone -n https://src.fedoraproject.org/rpms/gdb-exploitable.git /var/lib/mock/f40-build-2292401-56131/root/chroot_tmpdir/scmroot/gdb-exploitable
Cloning into '/var/lib/mock/f40-build-2292401-56131/root/chroot_tmpdir/scmroot/gdb-exploitable'...
$ git fetch origin 47ff03b28889d47f98c2b0ffd4d9c0a6065e7ec3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gdb-exploitable
 * [new ref]         47ff03b28889d47f98c2b0ffd4d9c0a6065e7ec3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47ff03b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild