$ git clone -n https://gitee.com/ywyw22/libunistring /var/lib/mock/dist-an23-build-193187-60823/root/chroot_tmpdir/scmroot/libunistring
Cloning into '/var/lib/mock/dist-an23-build-193187-60823/root/chroot_tmpdir/scmroot/libunistring'...
$ git fetch origin 20bb58e819f01cf0c8210970370b3f816723b9bc:KOJI_FETCH_HEAD
From https://gitee.com/ywyw22/libunistring
 * [new ref]         20bb58e819f01cf0c8210970370b3f816723b9bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20bb58e remove libunistring.so.2*