$ git clone -n https://gitee.com/src-anolis-dde/deepin-boot-maker.git /var/lib/mock/dist-an23-build-285852-64822/root/chroot_tmpdir/scmroot/deepin-boot-maker
Cloning into '/var/lib/mock/dist-an23-build-285852-64822/root/chroot_tmpdir/scmroot/deepin-boot-maker'...
$ git fetch origin a8:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-dde/deepin-boot-maker
 * [new branch]      a8         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c95a01 !1 rebuild for an8.6 Merge pull request !1 from xingwei-liu/a8