$ git clone -n https://gitee.com/src-opencloudos-rpms/tomcat.git /var/lib/mock/dist-oc9-build-138116-79642/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-oc9-build-138116-79642/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin b8eafd23037241a3646bbe1a07f8f9d01d19b6fb:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tomcat
 * [new ref]         b8eafd23037241a3646bbe1a07f8f9d01d19b6fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8eafd2 import tomcat-9.0.104-2.tl4