$ git clone -n https://gitee.com/src-opencloudos-rpms/gdb.git /var/lib/mock/dist-oc8-build-252628-84214/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/dist-oc8-build-252628-84214/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin 4ffed0753948664568ca9ef93079a5f08cf632be:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gdb
 * [new ref]         4ffed0753948664568ca9ef93079a5f08cf632be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ffed07 import gdb-8.2-20.1.tl3.ap.1