$ git clone -n https://src.fedoraproject.org/rpms/kf6-ksvg.git /var/lib/mock/f42-build-862127-170665/root/chroot_tmpdir/scmroot/kf6-ksvg
Cloning into '/var/lib/mock/f42-build-862127-170665/root/chroot_tmpdir/scmroot/kf6-ksvg'...
$ git fetch origin 99436226beceaa05b985d92fe810e82c78c262d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-ksvg
 * [new ref]         99436226beceaa05b985d92fe810e82c78c262d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9943622 6.8.0