$ git clone -n https://src.fedoraproject.org/rpms/rust-bytecheck_derive.git /var/lib/mock/f38-build-side-42-init-devel-1395359-31050/root/chroot_tmpdir/scmroot/rust-bytecheck_derive
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1395359-31050/root/chroot_tmpdir/scmroot/rust-bytecheck_derive'...
$ git fetch origin 7a61785bce50ec1aeb27f732b6b56f1dbacf64f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bytecheck_derive
 * [new ref]         7a61785bce50ec1aeb27f732b6b56f1dbacf64f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a61785 Update to version 0.6.11