$ git clone -n https://src.fedoraproject.org/rpms/plasma-workspace.git /var/lib/mock/f41-build-856981-167857/root/chroot_tmpdir/scmroot/plasma-workspace
Cloning into '/var/lib/mock/f41-build-856981-167857/root/chroot_tmpdir/scmroot/plasma-workspace'...
$ git fetch origin b22e77e5024f2feead94eebf9201b38540219388:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-workspace
 * [new ref]         b22e77e5024f2feead94eebf9201b38540219388 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b22e77e 6.2.1.1