$ git clone -n https://src.fedoraproject.org/rpms/golang-github-openapi-jsonreference.git /var/lib/mock/f45-build-12316-440/root/chroot_tmpdir/scmroot/golang-github-openapi-jsonreference
Cloning into '/var/lib/mock/f45-build-12316-440/root/chroot_tmpdir/scmroot/golang-github-openapi-jsonreference'...
$ git fetch origin 1ea0d8f0ecca93f59c1fad73427d243af5a1f836:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-openapi-jsonreference
 * [new ref]         1ea0d8f0ecca93f59c1fad73427d243af5a1f836 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ea0d8f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild