$ git clone -n https://src.fedoraproject.org/rpms/golang-github-tscholl2-siec.git /var/lib/mock/f45-build-12559-442/root/chroot_tmpdir/scmroot/golang-github-tscholl2-siec
Cloning into '/var/lib/mock/f45-build-12559-442/root/chroot_tmpdir/scmroot/golang-github-tscholl2-siec'...
$ git fetch origin 656c8bd14222064f2da2aec535926cab77de0326:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-tscholl2-siec
 * [new ref]         656c8bd14222064f2da2aec535926cab77de0326 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 656c8bd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild