$ git clone -n https://gitee.com/src-opencloudos-rpms/gcc.git /var/lib/mock/dist-oc8-build-255937-84543/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-oc8-build-255937-84543/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin ed0876c000c438dabb86d1e827c7497e1a75c1f5:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcc
 * [new ref]         ed0876c000c438dabb86d1e827c7497e1a75c1f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ed0876c import gcc-8.5.0-31.tl3.ap.1