$ git clone -n https://src.fedoraproject.org/rpms/jaero.git /var/lib/mock/f40-build-2600528-63128/root/chroot_tmpdir/scmroot/jaero
Cloning into '/var/lib/mock/f40-build-2600528-63128/root/chroot_tmpdir/scmroot/jaero'...
$ git fetch origin a694717d5d2429dca84b9b14af3242ddd72e0a00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jaero
 * [new ref]         a694717d5d2429dca84b9b14af3242ddd72e0a00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a694717 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild