$ git clone -n https://src.fedoraproject.org/rpms/grafana-pcp.git /var/lib/mock/f41-build-side-1-3081572-38960/root/chroot_tmpdir/scmroot/grafana-pcp
Cloning into '/var/lib/mock/f41-build-side-1-3081572-38960/root/chroot_tmpdir/scmroot/grafana-pcp'...
$ git fetch origin a77ab70090592492d2071b66bdf347578d777888:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grafana-pcp
 * [new ref]         a77ab70090592492d2071b66bdf347578d777888 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a77ab70 update to 5.2.0 tagged upstream sources