$ git clone -n https://src.fedoraproject.org/rpms/calypso.git /var/lib/mock/f39-build-1517907-35784/root/chroot_tmpdir/scmroot/calypso
Cloning into '/var/lib/mock/f39-build-1517907-35784/root/chroot_tmpdir/scmroot/calypso'...
$ git fetch origin c9d994e884551e920f06f91b9f2a5584ceaf34fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/calypso
 * [new ref]         c9d994e884551e920f06f91b9f2a5584ceaf34fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9d994e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild