$ git clone -n https://gitee.com/acc8226/libgpg-error.git /var/lib/mock/dist-an8.9-build-371641-71163/root/chroot_tmpdir/scmroot/libgpg-error
Cloning into '/var/lib/mock/dist-an8.9-build-371641-71163/root/chroot_tmpdir/scmroot/libgpg-error'...
$ git fetch origin 429c16a9b32bafe05f38c5a36685b3d9db987d03:KOJI_FETCH_HEAD
From https://gitee.com/acc8226/libgpg-error
 * [new ref]         429c16a9b32bafe05f38c5a36685b3d9db987d03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 429c16a spec: add doc sub package