$ git clone -n https://gitee.com/opencloudos-stream/perl-Alien-Base-ModuleBuild.git /var/lib/mock/dist-ocs23-epol9-build-215993-16194/root/chroot_tmpdir/scmroot/perl-Alien-Base-ModuleBuild
Cloning into '/var/lib/mock/dist-ocs23-epol9-build-215993-16194/root/chroot_tmpdir/scmroot/perl-Alien-Base-ModuleBuild'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-Alien-Base-ModuleBuild
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f721fb2 update