$ git clone -n https://src.fedoraproject.org/rpms/kf6-kirigami2.git /var/lib/mock/f39-build-1988647-43354/root/chroot_tmpdir/scmroot/kf6-kirigami2
Cloning into '/var/lib/mock/f39-build-1988647-43354/root/chroot_tmpdir/scmroot/kf6-kirigami2'...
$ git fetch origin c37ef9a450c725bab1a66642fd63d46d2fd721fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kirigami2
 * [new ref]         c37ef9a450c725bab1a66642fd63d46d2fd721fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c37ef9a Added the README