$ git clone -n https://src.fedoraproject.org/rpms/kactivitymanagerd.git /var/lib/mock/f41-build-side-1-2834462-33684/root/chroot_tmpdir/scmroot/kactivitymanagerd
Cloning into '/var/lib/mock/f41-build-side-1-2834462-33684/root/chroot_tmpdir/scmroot/kactivitymanagerd'...
$ git fetch origin 3116dd590ba5a2494fe824b274f2f71d8030340e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kactivitymanagerd
 * [new ref]         3116dd590ba5a2494fe824b274f2f71d8030340e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3116dd5 6.1.90