$ git clone -n https://src.fedoraproject.org/rpms/kactivitymanagerd.git /var/lib/mock/f41-build-side-1-2873632-34394/root/chroot_tmpdir/scmroot/kactivitymanagerd
Cloning into '/var/lib/mock/f41-build-side-1-2873632-34394/root/chroot_tmpdir/scmroot/kactivitymanagerd'...
$ git fetch origin cb0b9abd979fafdc9bc540bd7aa3e3dbd4272d7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kactivitymanagerd
 * [new ref]         cb0b9abd979fafdc9bc540bd7aa3e3dbd4272d7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb0b9ab 6.2.0