$ git clone -n https://gitee.com/src-opencloudos-rpms/attr.git /var/lib/mock/dist-oc8-build-247549-83588/root/chroot_tmpdir/scmroot/attr
Cloning into '/var/lib/mock/dist-oc8-build-247549-83588/root/chroot_tmpdir/scmroot/attr'...
$ git fetch origin 8d29653dceeab3bc15fb4fa87e8c2e9a817b58f3:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/attr
 * [new ref]         8d29653dceeab3bc15fb4fa87e8c2e9a817b58f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d29653 import attr-2.6.0-1.tl3