$ git clone -n https://gitee.com/ocs-upgrade/icu.git /var/lib/mock/dist-ocs23-base-build-301022-29948/root/chroot_tmpdir/scmroot/icu
Cloning into '/var/lib/mock/dist-ocs23-base-build-301022-29948/root/chroot_tmpdir/scmroot/icu'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/icu
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57f1dcd Upgrade to version 74.2