$ git clone -n https://src.fedoraproject.org/rpms/golang-github-prometheus-prom2json.git /var/lib/mock/f45-build-12459-442/root/chroot_tmpdir/scmroot/golang-github-prometheus-prom2json
Cloning into '/var/lib/mock/f45-build-12459-442/root/chroot_tmpdir/scmroot/golang-github-prometheus-prom2json'...
$ git fetch origin 67d8fd5402b26e424cc288c8bbfb8cb3c3f838c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-prometheus-prom2json
 * [new ref]         67d8fd5402b26e424cc288c8bbfb8cb3c3f838c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67d8fd5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild