$ git clone -n https://src.fedoraproject.org/rpms/psimd.git /var/lib/mock/f39-build-1513277-35601/root/chroot_tmpdir/scmroot/psimd
Cloning into '/var/lib/mock/f39-build-1513277-35601/root/chroot_tmpdir/scmroot/psimd'...
$ git fetch origin 6ed6ee878302872db6c793730aae4ab649cf652e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/psimd
 * [new ref]         6ed6ee878302872db6c793730aae4ab649cf652e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ed6ee8 Initial commit