$ git clone -n https://gitee.com/wenyuzifang/tomcat.git /var/lib/mock/dist-an23-build-481767-74252/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-an23-build-481767-74252/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin 6bc8b4abece5ebd542541902a0a18e38827a92a2:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tomcat
 * [new ref]         6bc8b4abece5ebd542541902a0a18e38827a92a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6bc8b4a Update code from upstream