$ git clone -n https://gitee.com/src-opencloudos-rpms/tomcat.git /var/lib/mock/dist-oc8-build-254732-84455/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-oc8-build-254732-84455/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin b07fc4e5851838cc00e7ab90fc66d0767dcde7b7:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tomcat
 * [new ref]         b07fc4e5851838cc00e7ab90fc66d0767dcde7b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b07fc4e import tomcat-9.0.121-1.tl3