$ git clone -n https://gitee.com/gaohongmei/gmp.git /var/lib/mock/dist-an23-build-180264-59132/root/chroot_tmpdir/scmroot/gmp
Cloning into '/var/lib/mock/dist-an23-build-180264-59132/root/chroot_tmpdir/scmroot/gmp'...
$ git fetch origin 87a052ffe15de536cc2cde53dacf06ec5f81cfb7:KOJI_FETCH_HEAD
From https://gitee.com/gaohongmei/gmp
 * [new ref]         87a052ffe15de536cc2cde53dacf06ec5f81cfb7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87a052f Cleanup spec for a23 builds