$ git clone -n https://gitee.com/src-opencloudos-rpms/tomcat.git /var/lib/mock/dist-oc9-build-250260-83971/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-oc9-build-250260-83971/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin 3531192226408dd323ee95ccbc9cb895c75514c2:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tomcat
 * [new ref]         3531192226408dd323ee95ccbc9cb895c75514c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3531192 import tomcat-9.0.121-1.tl4