$ git clone -n https://src.fedoraproject.org/rpms/OpenEXR_Viewers.git /var/lib/mock/f40-build-2013892-45927/root/chroot_tmpdir/scmroot/OpenEXR_Viewers
Cloning into '/var/lib/mock/f40-build-2013892-45927/root/chroot_tmpdir/scmroot/OpenEXR_Viewers'...
$ git fetch origin 5820575fe888343b97d0eb051a5c90fae4bf2be1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/OpenEXR_Viewers
 * [new ref]         5820575fe888343b97d0eb051a5c90fae4bf2be1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5820575 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild