$ git clone -n https://src.fedoraproject.org/rpms/rust-itertools.git /var/lib/mock/f40-build-2115941-50699/root/chroot_tmpdir/scmroot/rust-itertools
Cloning into '/var/lib/mock/f40-build-2115941-50699/root/chroot_tmpdir/scmroot/rust-itertools'...
$ git fetch origin c23e15e44d063c9be583342d82799ae003c950d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-itertools
 * [new ref]         c23e15e44d063c9be583342d82799ae003c950d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c23e15e Skip a test that fails on 32-bit architectures