$ git clone -n https://gitee.com/src-opencloudos-rpms/exiv2.git /var/lib/mock/dist-oc9-build-81986-56959/root/chroot_tmpdir/scmroot/exiv2
Cloning into '/var/lib/mock/dist-oc9-build-81986-56959/root/chroot_tmpdir/scmroot/exiv2'...
$ git fetch origin b111c4f423c6e377e3cb6dfe6507634cae5c7ec6:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/exiv2
 * [new ref]         b111c4f423c6e377e3cb6dfe6507634cae5c7ec6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b111c4f import exiv2-0.28.2-2.tl4