$ git clone -n https://gitee.com/src-opencloudos-rpms/libtasn1.git /var/lib/mock/dist-oc9-build-202198-80520/root/chroot_tmpdir/scmroot/libtasn1
Cloning into '/var/lib/mock/dist-oc9-build-202198-80520/root/chroot_tmpdir/scmroot/libtasn1'...
$ git fetch origin f20d0a2cd2a8c7beb2560e41346b143e8e830a54:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libtasn1
 * [new ref]         f20d0a2cd2a8c7beb2560e41346b143e8e830a54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f20d0a2 import libtasn1-4.19.0-5.tl4