$ git clone -n https://src.fedoraproject.org/rpms/rust-rustsec.git /var/lib/mock/f40-build-2492665-61664/root/chroot_tmpdir/scmroot/rust-rustsec
Cloning into '/var/lib/mock/f40-build-2492665-61664/root/chroot_tmpdir/scmroot/rust-rustsec'...
$ git fetch origin fd8840f9a315554cf29a30199a8e2ee69476bd32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustsec
 * [new ref]         fd8840f9a315554cf29a30199a8e2ee69476bd32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd8840f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild