$ git clone -n https://src.fedoraproject.org/rpms/pixman.git /var/lib/mock/f40-build-786680-134493/root/chroot_tmpdir/scmroot/pixman
Cloning into '/var/lib/mock/f40-build-786680-134493/root/chroot_tmpdir/scmroot/pixman'...
$ git fetch origin d6150e2df4231d300e73585c54fb2ec0583b7891:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pixman
 * [new ref]         d6150e2df4231d300e73585c54fb2ec0583b7891 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6150e2 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild