$ git clone -n https://src.fedoraproject.org/rpms/opengrm-ngram.git /var/lib/mock/f45-build-21066-578/root/chroot_tmpdir/scmroot/opengrm-ngram
Cloning into '/var/lib/mock/f45-build-21066-578/root/chroot_tmpdir/scmroot/opengrm-ngram'...
$ git fetch origin 29859f9c84f1e260eee23ccd3a9eb2c34a7ae087:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opengrm-ngram
 * [new ref]         29859f9c84f1e260eee23ccd3a9eb2c34a7ae087 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29859f9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild