$ git clone -n https://src.fedoraproject.org/rpms/90-Second-Portraits.git /var/lib/mock/f40-build-2271266-54878/root/chroot_tmpdir/scmroot/90-Second-Portraits
Cloning into '/var/lib/mock/f40-build-2271266-54878/root/chroot_tmpdir/scmroot/90-Second-Portraits'...
$ git fetch origin e78296109e244dd2699818f07b9a09b8e04aa44c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/90-Second-Portraits
 * [new ref]         e78296109e244dd2699818f07b9a09b8e04aa44c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e782961 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild