$ git clone -n https://gitee.com/src-opencloudos-rpms/libserializer.git /var/lib/mock/dist-oc8-build-254647-84444/root/chroot_tmpdir/scmroot/libserializer
Cloning into '/var/lib/mock/dist-oc8-build-254647-84444/root/chroot_tmpdir/scmroot/libserializer'...
$ git fetch origin 6f719e70b333ccb466827214d125adad37604c31:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libserializer
 * [new ref]         6f719e70b333ccb466827214d125adad37604c31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f719e7 import libserializer-1.1.2-20.tl3