$ git clone -n https://github.com/xcp-ng-rpms/gpumon.git /var/lib/mock/v8.3-incoming-9393-28142/root/chroot_tmpdir/scmroot/gpumon
Cloning into '/var/lib/mock/v8.3-incoming-9393-28142/root/chroot_tmpdir/scmroot/gpumon'...
$ git fetch origin 5847e52a976af16710d0e80bf260d6400724c19f:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/gpumon
 * [new ref]         5847e52a976af16710d0e80bf260d6400724c19f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5847e52 Merge pull request #15 from xcp-ng-rpms/stormi/rebase-gpumon