$ git clone -n https://gitee.com/src-opencloudos-rpms/tcpdump.git /var/lib/mock/dist-oc8-build-67507-41485/root/chroot_tmpdir/scmroot/tcpdump
Cloning into '/var/lib/mock/dist-oc8-build-67507-41485/root/chroot_tmpdir/scmroot/tcpdump'...
$ git fetch origin c467c088ab18f0001bef2465d29448071387c60b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tcpdump
 * [new ref]         c467c088ab18f0001bef2465d29448071387c60b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c467c08 import tcpdump-4.9.3-3.tl3.1