$ git clone -n https://src.fedoraproject.org/rpms/rubygem-web-console.git /var/lib/mock/f45-build-35398-695/root/chroot_tmpdir/scmroot/rubygem-web-console
Cloning into '/var/lib/mock/f45-build-35398-695/root/chroot_tmpdir/scmroot/rubygem-web-console'...
$ git fetch origin 7bb6909b2a5f275c818b9e88714ab02818103942:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-web-console
 * [new ref]         7bb6909b2a5f275c818b9e88714ab02818103942 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bb6909 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild