$ git clone -n https://src.fedoraproject.org/rpms/R-magick.git /var/lib/mock/f40-build-2071200-49322/root/chroot_tmpdir/scmroot/R-magick
Cloning into '/var/lib/mock/f40-build-2071200-49322/root/chroot_tmpdir/scmroot/R-magick'...
$ git fetch origin 44d9ce66d4586b50f5668880b62add7e8c611b66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-magick
 * [new ref]         44d9ce66d4586b50f5668880b62add7e8c611b66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44d9ce6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild