$ git clone -n https://src.fedoraproject.org/rpms/perl-Image-Sane.git /var/lib/mock/f40-build-2305115-57063/root/chroot_tmpdir/scmroot/perl-Image-Sane
Cloning into '/var/lib/mock/f40-build-2305115-57063/root/chroot_tmpdir/scmroot/perl-Image-Sane'...
$ git fetch origin 5874a72a55465a93ed6ccd81c56384f12282ec23:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Image-Sane
 * [new ref]         5874a72a55465a93ed6ccd81c56384f12282ec23 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5874a72 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild