$ git clone -n https://src.fedoraproject.org/rpms/gscan2pdf.git /var/lib/mock/f40-build-2530024-61829/root/chroot_tmpdir/scmroot/gscan2pdf
Cloning into '/var/lib/mock/f40-build-2530024-61829/root/chroot_tmpdir/scmroot/gscan2pdf'...
$ git fetch origin 134f18eadf3b339b94b4d5eb9149f831bd0d0648:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gscan2pdf
 * [new ref]         134f18eadf3b339b94b4d5eb9149f831bd0d0648 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 134f18e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild