$ git clone -n https://src.fedoraproject.org/rpms/rust-rayon /var/lib/mock/f42-build-3453413-45488/root/chroot_tmpdir/scmroot/rust-rayon
Cloning into '/var/lib/mock/f42-build-3453413-45488/root/chroot_tmpdir/scmroot/rust-rayon'...
$ git fetch origin 6207b215828674a493a65a6a5f8685778920ccc8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rayon
 * [new ref]         6207b215828674a493a65a6a5f8685778920ccc8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6207b21 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild