$ git clone -n https://src.fedoraproject.org/rpms/rubygem-image_processing.git /var/lib/mock/f40-build-1780524-24818/root/chroot_tmpdir/scmroot/rubygem-image_processing
Cloning into '/var/lib/mock/f40-build-1780524-24818/root/chroot_tmpdir/scmroot/rubygem-image_processing'...
$ git fetch origin ae6a1165c1eaf1f90fb6c7f1acc35ec9a3c117a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-image_processing
 * [new ref]         ae6a1165c1eaf1f90fb6c7f1acc35ec9a3c117a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae6a116 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild