$ git clone -n https://src.fedoraproject.org/rpms/json-schema-validator.git /var/lib/mock/f45-build-14489-461/root/chroot_tmpdir/scmroot/json-schema-validator
Cloning into '/var/lib/mock/f45-build-14489-461/root/chroot_tmpdir/scmroot/json-schema-validator'...
$ git fetch origin aeac3fa3bb723e0380666178bdda055ed324da47:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/json-schema-validator
 * [new ref]         aeac3fa3bb723e0380666178bdda055ed324da47 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aeac3fa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild