$ git clone -n https://src.fedoraproject.org/rpms/plasma-workspace-x11.git /var/lib/mock/f41-build-1084463-19877/root/chroot_tmpdir/scmroot/plasma-workspace-x11
Cloning into '/var/lib/mock/f41-build-1084463-19877/root/chroot_tmpdir/scmroot/plasma-workspace-x11'...
$ git fetch origin b530cbdf6c3becd47e6cc9fbd0bb3c7577f9897f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-workspace-x11
 * [new ref]         b530cbdf6c3becd47e6cc9fbd0bb3c7577f9897f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b530cbd Merge branch 'rawhide' into f40