$ git clone -n https://src.fedoraproject.org/rpms/porcupine.git /var/lib/mock/f40-build-2023888-46942/root/chroot_tmpdir/scmroot/porcupine
Cloning into '/var/lib/mock/f40-build-2023888-46942/root/chroot_tmpdir/scmroot/porcupine'...
$ git fetch origin 92fc26442495abb71f447e772bbcee4420552436:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/porcupine
 * [new ref]         92fc26442495abb71f447e772bbcee4420552436 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92fc264 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild