$ git clone -n https://gitee.com/gcdota930915/libreport.git /var/lib/mock/dist-an8.7-build-270429-64112/root/chroot_tmpdir/scmroot/libreport
Cloning into '/var/lib/mock/dist-an8.7-build-270429-64112/root/chroot_tmpdir/scmroot/libreport'...
$ git fetch origin a8:KOJI_FETCH_HEAD
From https://gitee.com/gcdota930915/libreport
 * [new branch]      a8         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da4af80 fix