$ git clone -n https://src.fedoraproject.org/rpms/rust-atomic.git /var/lib/mock/f40-build-2639805-66382/root/chroot_tmpdir/scmroot/rust-atomic
Cloning into '/var/lib/mock/f40-build-2639805-66382/root/chroot_tmpdir/scmroot/rust-atomic'...
$ git fetch origin 93b4c6acbcdb9e094778167dba7ff8e77becff2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-atomic
 * [new ref]         93b4c6acbcdb9e094778167dba7ff8e77becff2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93b4c6a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild