$ git clone -n https://gitee.com/src-opencloudos-rpms/tomcat.git /var/lib/mock/dist-oc9-build-120230-71108/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-oc9-build-120230-71108/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin dfdf2eb78f8c26b92c32ff1214c4409b3c79d3a4:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tomcat
 * [new ref]         dfdf2eb78f8c26b92c32ff1214c4409b3c79d3a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dfdf2eb import tomcat-9.0.86-6.tl4