$ git clone -n https://src.fedoraproject.org/rpms/rubygem-prawn-svg.git /var/lib/mock/f40-build-2323204-58702/root/chroot_tmpdir/scmroot/rubygem-prawn-svg
Cloning into '/var/lib/mock/f40-build-2323204-58702/root/chroot_tmpdir/scmroot/rubygem-prawn-svg'...
$ git fetch origin 85fc542b696afa80e61aab5b1cf8d69738d164db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-prawn-svg
 * [new ref]         85fc542b696afa80e61aab5b1cf8d69738d164db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85fc542 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild