$ git clone -n https://gitee.com/src-opencloudos-rpms/libtasn1.git /var/lib/mock/dist-oc8-build-243533-83131/root/chroot_tmpdir/scmroot/libtasn1
Cloning into '/var/lib/mock/dist-oc8-build-243533-83131/root/chroot_tmpdir/scmroot/libtasn1'...
$ git fetch origin cb548fb84ac0b63c55eac1183cd81b8cfb6cfbca:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libtasn1
 * [new ref]         cb548fb84ac0b63c55eac1183cd81b8cfb6cfbca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb548fb import libtasn1-4.13-6.tl3