$ git clone -n https://gitee.com/wenyuzifang/tomcat.git /var/lib/mock/dist-an23-build-470264-74061/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-an23-build-470264-74061/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin 6bb1d9af1fc28086718deccea030231d490d2407:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/tomcat
 * [new ref]         6bb1d9af1fc28086718deccea030231d490d2407 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6bb1d9a Update code from upstream