$ git clone -n https://src.fedoraproject.org/rpms/rust-cfg-if0.1.git /var/lib/mock/f40-build-2659498-66918/root/chroot_tmpdir/scmroot/rust-cfg-if0.1
Cloning into '/var/lib/mock/f40-build-2659498-66918/root/chroot_tmpdir/scmroot/rust-cfg-if0.1'...
$ git fetch origin b0fd5aa340ab05eae7c0d694d9c0caf12207cda5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cfg-if0.1
 * [new ref]         b0fd5aa340ab05eae7c0d694d9c0caf12207cda5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0fd5aa Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild