$ git clone -n https://gitee.com/src-opencloudos-rpms/gmp.git /var/lib/mock/dist-oc9-pre-build-238779-82547/root/chroot_tmpdir/scmroot/gmp
Cloning into '/var/lib/mock/dist-oc9-pre-build-238779-82547/root/chroot_tmpdir/scmroot/gmp'...
$ git fetch origin 28d2e70f0f014d11d525ca9b374ab8a236cf9458:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gmp
 * [new ref]         28d2e70f0f014d11d525ca9b374ab8a236cf9458 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28d2e70 import gmp-6.3.0-4.tl4