$ git clone -n https://gitee.com/mgb01105731/qemu_3.git /var/lib/mock/dist-an23-build-497957-74608/root/chroot_tmpdir/scmroot/qemu_3
Cloning into '/var/lib/mock/dist-an23-build-497957-74608/root/chroot_tmpdir/scmroot/qemu_3'...
$ git fetch origin bcc4e397a4391e2fe930ca6f0273514c2cc91a08:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/qemu_3
 * [new ref]         bcc4e397a4391e2fe930ca6f0273514c2cc91a08 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bcc4e39 fix yum update err