$ git clone -n https://src.fedoraproject.org/rpms/nss_nis.git /var/lib/mock/f39-build-1560017-37329/root/chroot_tmpdir/scmroot/nss_nis
Cloning into '/var/lib/mock/f39-build-1560017-37329/root/chroot_tmpdir/scmroot/nss_nis'...
$ git fetch origin 4d729f6508b3c5878ecfcbbd57a4f8b45d6b2928:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nss_nis
 * [new ref]         4d729f6508b3c5878ecfcbbd57a4f8b45d6b2928 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d729f6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild