$ git clone -n https://gitee.com/src-opencloudos-rpms/jakarta-mail.git /var/lib/mock/dist-oc9-build-59974-16463/root/chroot_tmpdir/scmroot/jakarta-mail
Cloning into '/var/lib/mock/dist-oc9-build-59974-16463/root/chroot_tmpdir/scmroot/jakarta-mail'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jakarta-mail
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6c0fba import jakarta-mail-1.6.7-3.tl4