$ git clone -n https://src.fedoraproject.org/rpms/golang-github-revel-config.git /var/lib/mock/f45-build-12430-442/root/chroot_tmpdir/scmroot/golang-github-revel-config
Cloning into '/var/lib/mock/f45-build-12430-442/root/chroot_tmpdir/scmroot/golang-github-revel-config'...
$ git fetch origin c8a3cb973b11495752b960eae67092e4b61240ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-revel-config
 * [new ref]         c8a3cb973b11495752b960eae67092e4b61240ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8a3cb9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild