$ git clone -n https://src.fedoraproject.org/rpms/rust-cryptoki.git /var/lib/mock/f42-build-side-1-3589361-46957/root/chroot_tmpdir/scmroot/rust-cryptoki
Cloning into '/var/lib/mock/f42-build-side-1-3589361-46957/root/chroot_tmpdir/scmroot/rust-cryptoki'...
$ git fetch origin cb49fa1a169349d9cdef0f74c2f2f125a6df0bca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cryptoki
 * [new ref]         cb49fa1a169349d9cdef0f74c2f2f125a6df0bca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb49fa1 Update to 0.9.0 (#2292911)