$ git clone -n https://github.com/xcp-ng-rpms/gpumon.git /var/lib/mock/v8.3-u-psafont2-9740-28450/root/chroot_tmpdir/scmroot/gpumon
Cloning into '/var/lib/mock/v8.3-u-psafont2-9740-28450/root/chroot_tmpdir/scmroot/gpumon'...
$ git fetch origin aba26af10ee985bff78927b04f9082bc3e2e87b4:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/gpumon
 * [new ref]         aba26af10ee985bff78927b04f9082bc3e2e87b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aba26af bump release for test build