$ git clone -n https://gitee.com/zhuzhustu/nss_nis.git /var/lib/mock/dist-an23-build-524899-77908/root/chroot_tmpdir/scmroot/nss_nis
Cloning into '/var/lib/mock/dist-an23-build-524899-77908/root/chroot_tmpdir/scmroot/nss_nis'...
$ git fetch origin 87e1cf1116ce42a0cfb522655192a0294b26e530:KOJI_FETCH_HEAD
From https://gitee.com/zhuzhustu/nss_nis
 * [new ref]         87e1cf1116ce42a0cfb522655192a0294b26e530 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87e1cf1 update nss_nis.spec.