$ git clone -n https://src.fedoraproject.org/rpms/golang-github-ghemawat-stream.git /var/lib/mock/f45-build-11929-436/root/chroot_tmpdir/scmroot/golang-github-ghemawat-stream
Cloning into '/var/lib/mock/f45-build-11929-436/root/chroot_tmpdir/scmroot/golang-github-ghemawat-stream'...
$ git fetch origin 05d14d8d7854ad350414ec90e114e9bcc7248b59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-ghemawat-stream
 * [new ref]         05d14d8d7854ad350414ec90e114e9bcc7248b59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05d14d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild