$ git clone -n https://gitee.com/opencloudos-stream/tomcat.git /var/lib/mock/dist-ocs23-base-build-310392-32491/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/dist-ocs23-base-build-310392-32491/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/tomcat
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b49f89 !11 Remove conditional logic for Maven version selection. Merge pull request !11 from doriscchao/master