$ git clone -n https://gitee.com/src-opencloudos-rpms/tomcat.git /var/lib/mock/dist-oc9-build-138150-79642/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-oc9-build-138150-79642/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin c279047bc9fd0df62d80f537bc97ff500ebdd141:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tomcat
 * [new ref]         c279047bc9fd0df62d80f537bc97ff500ebdd141 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c279047 import tomcat-9.0.86-10.tl4