$ git clone -n https://src.fedoraproject.org/rpms/flatpak.git /var/lib/mock/f42-build-side-1-3498258-45962/root/chroot_tmpdir/scmroot/flatpak
Cloning into '/var/lib/mock/f42-build-side-1-3498258-45962/root/chroot_tmpdir/scmroot/flatpak'...
$ git fetch origin f2195717887e1cdfafb19aa7dab90bcf73628c50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flatpak
 * [new ref]         f2195717887e1cdfafb19aa7dab90bcf73628c50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f219571 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild