$ git clone -n https://src.fedoraproject.org/rpms/rust-scx_layered.git /var/lib/mock/f42-build-3364893-45045/root/chroot_tmpdir/scmroot/rust-scx_layered
Cloning into '/var/lib/mock/f42-build-3364893-45045/root/chroot_tmpdir/scmroot/rust-scx_layered'...
$ git fetch origin 6faebe2f8840758c81a6eb8f4db504b855a8e37c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-scx_layered
 * [new ref]         6faebe2f8840758c81a6eb8f4db504b855a8e37c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6faebe2 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild