$ git clone -n https://gitee.com/mgb01105731/gdb.git /var/lib/mock/dist-an23.3-build-421631-72908/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/dist-an23.3-build-421631-72908/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin b2f07ef15bb364fd0af459936d80e6211c6d9650:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/gdb
 * [new ref]         b2f07ef15bb364fd0af459936d80e6211c6d9650 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2f07ef Update to 14.2 from 13.2