$ git clone -n https://gitee.com/src-opencloudos-rpms/exiv2.git /var/lib/mock/dist-oc9-build-81994-56959/root/chroot_tmpdir/scmroot/exiv2
Cloning into '/var/lib/mock/dist-oc9-build-81994-56959/root/chroot_tmpdir/scmroot/exiv2'...
$ git fetch origin 2f734e1683d841eea4093ea5a3169e176bc7cf53:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/exiv2
 * [new ref]         2f734e1683d841eea4093ea5a3169e176bc7cf53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f734e1 import exiv2-0.28.2-2.tl4