$ git clone -n https://gitee.com/lizhao2025/libisoburn.git /var/lib/mock/dist-an23-build-496724-74608/root/chroot_tmpdir/scmroot/libisoburn
Cloning into '/var/lib/mock/dist-an23-build-496724-74608/root/chroot_tmpdir/scmroot/libisoburn'...
$ git fetch origin e251c6b04b5035aa39e92c12a7d525686854f0e8:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/libisoburn
 * [new ref]         e251c6b04b5035aa39e92c12a7d525686854f0e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e251c6b Update code from upstream