$ git clone -n https://src.fedoraproject.org/rpms/xrandr.git /var/lib/mock/f45-build-39126-732/root/chroot_tmpdir/scmroot/xrandr
Cloning into '/var/lib/mock/f45-build-39126-732/root/chroot_tmpdir/scmroot/xrandr'...
$ git fetch origin 899bcb02db3c238e4d9c97c78153fbd5afe37c1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xrandr
 * [new ref]         899bcb02db3c238e4d9c97c78153fbd5afe37c1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 899bcb0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild