$ git clone -n https://src.fedoraproject.org/rpms/golang-github-xeipuuv-gojsonreference.git /var/lib/mock/f45-build-12603-442/root/chroot_tmpdir/scmroot/golang-github-xeipuuv-gojsonreference
Cloning into '/var/lib/mock/f45-build-12603-442/root/chroot_tmpdir/scmroot/golang-github-xeipuuv-gojsonreference'...
$ git fetch origin dd7dbea654fd9106d2116455f5be140d0c87bb18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-xeipuuv-gojsonreference
 * [new ref]         dd7dbea654fd9106d2116455f5be140d0c87bb18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd7dbea Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild