$ git clone -n https://src.fedoraproject.org/rpms/megapixels.git /var/lib/mock/f42-build-3339261-41426/root/chroot_tmpdir/scmroot/megapixels
Cloning into '/var/lib/mock/f42-build-3339261-41426/root/chroot_tmpdir/scmroot/megapixels'...
$ git fetch origin fa12143e6c9ff466cfc9438085ff888592160013:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/megapixels
 * [new ref]         fa12143e6c9ff466cfc9438085ff888592160013 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa12143 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild