$ git clone -n https://src.fedoraproject.org/rpms/golang-github-chris-ramon-douceur.git /var/lib/mock/f45-build-11806-435/root/chroot_tmpdir/scmroot/golang-github-chris-ramon-douceur
Cloning into '/var/lib/mock/f45-build-11806-435/root/chroot_tmpdir/scmroot/golang-github-chris-ramon-douceur'...
$ git fetch origin 68b4f07335b9954dfe16ec55a76364d29b53ea0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-chris-ramon-douceur
 * [new ref]         68b4f07335b9954dfe16ec55a76364d29b53ea0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68b4f07 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild