$ git clone -n https://src.fedoraproject.org/rpms/golang-github-golangplus-testing.git /var/lib/mock/f45-build-11985-436/root/chroot_tmpdir/scmroot/golang-github-golangplus-testing
Cloning into '/var/lib/mock/f45-build-11985-436/root/chroot_tmpdir/scmroot/golang-github-golangplus-testing'...
$ git fetch origin 75f2378c1d38e14d4aed571b184819047e067b1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-golangplus-testing
 * [new ref]         75f2378c1d38e14d4aed571b184819047e067b1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75f2378 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild