$ git clone -n https://src.fedoraproject.org/rpms/osbuild.git /var/lib/mock/f45-build-21181-580/root/chroot_tmpdir/scmroot/osbuild
Cloning into '/var/lib/mock/f45-build-21181-580/root/chroot_tmpdir/scmroot/osbuild'...
$ git fetch origin 5c32abfa4fabdde6c77fc35330e3c9e9273297e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/osbuild
 * [new ref]         5c32abfa4fabdde6c77fc35330e3c9e9273297e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c32abf Update to 193 upstream release